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Coefficients 2013-11-27
kim pose la question :
in the expression below, what number is the coefficient of y? y2+3y+4
Penny Nom lui répond.
A parabola 2012-06-04
In a parabola, I need to know what "a" b and c determine. I think that a determines the width of the parabola, but I am not exactly sure what b, and c do.
Robert Dawson lui répond.
A fourth degree polynomial function with real coefficients 2010-10-30
Ryan pose la question :
Question from Ryan, a student: What is the fourth degree polynomial function with real coefficients that has -1,1 and I as zeros and such that f(x)=160
Harley Weston lui répond.
A polynomial with integer coefficients 2010-10-23
Question from Adori, a student: Find a polynomial with integer coefficients that has the given zeros: 2/3, 4, root of 3i, root of -3i.
Harley Weston lui répond.
Constants and coefficients 2010-03-12
lourdes pose la question :
identify the coefficients, constant term(s), and like terms of the expression.
8x + 9 - 3x
17 - 2a + 5a - 1
7m - 7 + 6m - 6
-10 -15r -22r + 8

Penny Nom lui répond.
Coefficients 2009-11-17
Da'mon pose la question :
The Coefficients of the expression 8 - 5x - 4 + 3x are 5 and 3 Whether the statement is true or false.
Penny Nom lui répond.
Susan pose la question :
Write the polynomial P(x)=x^3-3x^4+17x+11-4/3x^2 in descending order. Identify the leading term and the leading coefficient.
Penny Nom lui répond.
Constants, and coeficiants 2009-01-10
Kelsey pose la question :
I am having trouble trying to remember what like terms, constants, and coeficiants are. My math teacher hasent been explaining it very well and i was wondering how to remember what they are, and what they are? I dont understand the concepts.
Stephen La Rocque lui répond.
Coefficients, Like Terms, and Constants 2008-08-14
How Would I Answer This Problem?

Coefficients Like Terms Constants
3x+7
4m+(-3n)+n
6kp+9k+kp-14
-8y+6ab+7-3ba
c+2c+c-5c+1

I Would Really Appreciate It If You Could Help Me
Sincerely,

Penny Nom lui répond.
n choose r equals n-1 choose r plus n-1 choose r - 1 2008-07-14
fae pose la question :
Prove that

( n ) = ( n – 1) + ( n - 1 )
( r )         ( r )        (r-1)

NOTE: the ( ) should be one for n taken r and so on. but there is no one big ( ) that will cater two lines

Janice Cotcher lui répond.
A quadratic equation with odd coefficients 2008-04-15
Manashi pose la question :
If p,q,r be any odd integers, then prove that the roots of the quadratic equation px^2+qx+r=0 can't be rational .
Stephen La Rocque lui répond.
Coefficients 2006-11-02
Kilihea pose la question :
How do you factor the following expression so that the coefficient is 1? 4x+8 and -3x-27
Haley Ess lui répond.
Prove that 2nCn is less than 4n, for all positive integers n? 2006-10-01
Anna pose la question :
How can I prove that 2nCn is less than 4n, for all positive integers n?
Penny Nom lui répond.
What are the 3rd and 4th terms of (2x-y)^7? 2006-06-18
April pose la question :
What are the 3rd and 4th terms of this sequence: (2x-y)7?
I'm having an issue with this...is there any easier way to get it without completely factoring the whoooole thing out?

Penny Nom lui répond.
Coefficients, constants and like terms 2005-10-05
Elizabeth pose la question :
In the equation -8y+6ab+7-3ab what are the coefficients; the like terms and constants?
Penny lui répond.
Binomial distribution 2003-12-17
Lesley pose la question :
my daughter is having difficulty with the following formula P(X=x) = ( n over x) px (1-p) n-x
The teacher has given them the formula but not taught them how to apply it or understand it.

Penny Nom lui répond.
Newton's binomial theorem 2003-08-30
William pose la question :
According to page 126 of Murtha & Willard's "Statistics and Calculus" (Prentice-Hall, 1973), Newton's binomial theorem can proved inductively. I suppose that was his method, which I would like to see.
Penny Nom lui répond.
Successive coefficients in Pascal's Triangle 2002-12-27
Quincy pose la question :
There is a formula connecting any (k+1) successive coefficients in the nth row of the Pascal Triangle with a coefficient in the (n+k)th row. Find this formula
Penny Nom and Walter Whiteley lui répond.
Michael pose la question :
I would like to know, how to solve this Complex number: quadratic equation. ix 2 + x -i = 0
Harley Weston lui répond.
Successive coefficients in the nth row of Pascal's Triangle 2002-06-10
Tim pose la question :
There is a formula connecting any (k+1) successive coefficients in the nth row of Pascal's Triangle with a coefficient in the (n+k)th row. find this formula.
Penny Nom lui répond.
Pascal's Triangle 2002-04-02
Brian pose la question :
It's about (a+b)x. I remember there a triangle with numbers to remember for a faster solution. Can you please teach me?
Penny Nom lui répond.
A degree 5 polynomial 2002-02-17
Carla pose la question :
Write an equation for a polynomial of degree 5 given the following zeros:
-7+3i, -2+sqrt(13), 6

Penny Nom lui répond.
Undetermined coefficients 2001-11-22
Hoda pose la question :
The equation is:

y" - 2y' + y = t et + 4

We need to use The method of Undetermined coefficients. I have tried assuming that the solution is Atet+Bet+C, but all I get is C=4 and I tried (At2+Bt+C)et+D, but again I get 0=0 when I calculate the first and second derivatives, so i get no information on the constants. Any suggestions?

Harley Weston lui répond.
Lucas' theorem 2001-10-09
Tania pose la question :
How could I demonstrate: nCp is congruent to floor(n/p) (modulo p)? where rCk is a binomial coefficient, rCk = r(r-1)...(r-k+1)/k(k-1)...1, and p is a prime number
Richard McIntosh lui répond.
A parent pose la question :
A quadratic function is given by f:x------ax2+b

If the two points A(2, 2) and B (0, -8) are on the graph of the function, then find a and b.

Penny Nom lui répond.
A dollar, quarter, dime, nickle and penny 2001-01-07
Sarah pose la question :
Arnold has a dollar coin, one dime, one quarter, one nickel, and a penny. The number of different sums of money that can be formed using three coins is...
Penny Nom lui répond.
6-49 2000-09-14
Steve pose la question :
In our state lottery you must choose 6 numbers (1-49). How many different combinations are there? They can be in any order.
Harley Weston lui répond.
Binomial coefficients 2000-03-21
Howard Lutz pose la question :
How do you find each successive numerical term in this equation y+dy=(x+dx)5 =x5+5*x4dx+10*x3(dx)2+10*x^2(dx)3+5*x(dx)4+(dx)5 I would appreciate an explanation of the method to find the numeric coefficient in a binomial expansion
Penny Nom lui répond.
Multinomial coefficients 1999-12-03
Suraj Das pose la question :
Is there a formula for the expansion of (a+b+c) to the nth power? Does it have to do with Pascal's triangle?
Penny Nom lui répond.
Cannonballs 1999-01-27
Roger King pose la question :
How many cannonballs can be stacked in a triangular pyramid?
Penny Nom lui répond.
What's the next term? 1998-11-12
Ilia pose la question :
What the formula and explonation for formula for next patterns:

1) 1, 4, 10, 20, 35, 56, 84,...

2) 0, 6, 30, 90, 210, 420,...

Thanks!
Penny Nom lui répond.

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