the width of a rectangle is 3cm less than the legnth. If the area of the rectangle is 10cm2, find the dimensions of the rectangle.

Answer 1

You have two numbers where one is 3 less than the other (so i is 3 more than the other) and their product is 10. Just do some simple trial and err:

0 and 3----their product is 0

1 and 4----their product is 4

2 and 5----their product is 10. That's the one!