Question

factorise 9x2 - 49​

Answer 1

Answer:

-31

Step-by-step explanation:

9×2-49

18-49

-31

I hope it will help u

Answer 2

9x^2 - 49

(3x)^2 - (7)^2

(3x+7)(3x-7)

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

I hope it will help u .....