Question

(9x+7y) (9x—7y) what is the answer

Answer 1

(9x+7y)(9x-7y)

Using formula (a+b)(a-b)=a^2-b^2

(9x)^2-(7y)^2

81x^2-49y^2

Answer 2

Answer :-

• (9x + 7y) (9x - 7y)

=> (9x)² - (7y)²

=> 81x² - 49y²