Question

(2x-3)²+(2x+3)² , (6+5x)²+(6-5x)²​

Answer 1

Step-by-step explanation:

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

1. (2x-3)^2 + (2x+3)^2 = 2 [(2x)^2+3^2] = 2 [4x^2+9] = 8x^2 + 18 answer.

2. (6+5x)^2+(6-5x)^2 = 2 [6^2+(5x)^2] = 2 [36+25x^2] = 72 + 50x^2 answer.