Question

Ab = 50, a^2 = 100, b^2 = 25; (a-b)^2 = ?

Answer 1

The answer would be:

( ab + 50 ) • ( ab - 50 )
--------------------------------
25b^2

Answer 2

By liking at the equations, I know that A has to be 10, because a^2 is 100, and 10 times 10 equal 100. Knowing that a=10, I can find b


10b=50

Divide each side by 10

B=5


So,

(10-5)^2

(5)^2


25

The answer is 25 because 5 times 5 equals 25