Question

How do you simplify (3√a−7)(3√a+7)?

Answer 1

this is in the formula of

(a+b)(a-b)

= a^2 - b^2

=(3√a)^ - 7^2

=9a-49

Answer 2

Answer:

9a -49

Step-by-step explanation:

= (3√a−7)(3√a+7)

According to Formula :-

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

So,

= (3√a^2 - 7^2)

= 9a -49