Question

2x^2+2x-144=0 Answers?

Answer 1

`x = 8 \\ x = - 9`

Explanation:

`2 {x}^(2) + 2x - 144 = 0 \\ 2 {x}^(2) + 18x - 16x - 144 = 0 \\ 2x(x + 9) - 16(x + 9) = 0 \\ (2x - 16)(x + 9) = 0 \\ \\ 2x - 16 = 0 \\ 2x = 0 + 16 \\ 2x = 16 \\ (2x)/(2) = (16)/(2) \\ x = 8 \\ \\ x + 9 = 0 \\ x = 0 - 9 \\ x = - 9`