Answers

2015-07-17T10:32:27+08:00
The difference of their squares is 750
0
how did you get the answer?
the numbers were reresented by x and y so x+y =30 and x-y=25 if you multiply x+y and x-y it will become x^2-y^2. that is called the difference of the squares. then to get the value of x^2-y^2 you should multiply 30 by 25 bec. x+y = 30 and x-y = 25. then its 750
thank you for your answer it helped me a lot
welcome