Question

(2x+1)³ + 7 = 5. (3-7)

Answer 1

(2x+1)³+7=5.(3-7)
(2x+1)³+7=5(-4)
(2x+1)³+7=-20
(2x+1)³=-20-7
(2x+1)³=-27
(2x+1)=-27^(1/3)
2x+1=-3
2x=-3-1
2x=-4
x=-4/2
x=-2

rpta =  -2