Question

if a+b =9,a-b=5 then a^- b^2 is ?​

Answer 1

Ans:- a + b = 9 and a - b = 5 ( given)

= (a + b) (a - b) = 9 × 5

= a^2 - b^2 = 45

hence the answer is 45

hope it will help you