Question

find the product by suitable identity (a²-5) (a²+6)

Answer 1

Equation :- (a²-5)(a²+6)

=> (a² - 5)(a² + 6)

=> a⁴ + 6a² - 5a² - 30

=> a⁴ + a² - 30

Answer 2

(a-b) (a+b)=a^2-5×6=a^2-30