Question

The product of a and b added to the difference of a and b (a > b)
​

Answer 1

Answer:

a + b) (a – b) = a(a – b) + b (a – b)

= a2 – ab + ba + b2

= a2 – b2

Therefore (a + b) (a – b) = a2 – b2

(First term + Second term) (First term – Second term) = (First term)2 – (Second term) 2