Question

(х+3)в квадрате - 16 = (1-2х) в квадрате

Answer 1

x^2 + 6x + 9 - 16 =  1 - 4x + 4x^2

3x^2 -10x + 8=0

D= 2

x= 10 +/- 2 / 6

x1 = 2   x2= 8/6 = 4/3

Answer 2

2x+9-16=1-6x
2x+6x=1-9=16
8x=24
x=3