Question

Уравнения
√x^3-2=5
√x+1=x-1
√2x+1=√x^2-2x+4

Answer 1

√х³-2|=5

х³-2=25

х³=27

х=3



√х+1|=х-1

х+1=х²+1

х²+1-х-1=0

х=0



√2х+1|=√х²-2х+4|

2х+1=х²-2х+4

х²-2х+4-2х-1=0

х²-4х+3=0

х(х-4)=-3

х=-3, х=4