2^3+2x=4^1-x^2-3x помогите

Question

2^3+2x=4^1-x^2-3x
помогите

Comments

+2х=4-x^2-2x2х+2х+х^2=4-84x+x^2=-4x^2+4x+4=0D=4^2-4*4*1=16-16=0 D=0x=-4/2x=-2

Answer 1

8+2x=4-x^2-3x
x^2+2x+3x+8-4=0
x^2+5x+4=0
D=5^2-4*1*4
D=25-16
D=√9
D=3
x1=-5-3/2=-4
x2=-5+3/2=-1

Comments

+2х=4-x^2-2x
2х+2х+х^2=4-8
4x+x^2=-4
x^2+4x+4=0
D=4^2-4*4*1=16-16=0 D=0
x=-4/2
x=-2