|
2 articles trouvés pour ce sujet.
 |
|
|
|
|
|
|
|
|
A troublesome word problem |
2015-12-28 |
|
Linda pose la question :
James is now 3/5 John's age. Three years ago, he was 1/2 John's age. Three years from now, he will be 2/3 John's age.
How old are they now?
Penny Nom lui répond. |
|
|
|
|
|
|
Explain why 3(x+2) = 3x+2 is incorrect |
2005-03-28 |
|
Cynthia pose la question :
An algebra student incorrectly used the distributive property and wrote 3(x+2) = 3x+2. How would you explain to him the correct result, without the use of the distributive law?
Explain why the square of the sum of two numbers is different from the sum of the squares of two numbers.
Penny Nom lui répond. |
|
|
|
