Question

(4x+7)square +(4x-7)square​

Answer 1

Answer:

identity a²-b²=(a-b)(a+b)

Step-by-step explanation:

1. we converted (a+b)(a-b) into a²-b²
2. 4x²-7²
3. 16x²-49

Answer 2

Answer:

16x^2 - 49

Step-by-step explanation:

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

So,

(4x)^2 - (7)^2 = 16x^2 - 49