Question

Find the product of (x + 7)(x − 7).

x2 − 14x + 49

x2 − 49

x2 + 14x + 49

x2 + 49

Please help I got the answer x2 + 14x + 49 correct me if I'm wrong ???

Answer 1

Its very simple my dear friend...
we know that (x-a)(x+a)=(x^2-a^2)

Answer 2

its nothing but a=7
then we get x^2-7^2 = x^2-49
so, B is correct option....

Answer 3

Thank you so much @chetan552

Answer 4

You are always welcome.....@NadiaElhaj_1

Answer 5

FOIL