Question

(1-2х)(4х2+2х+1)=8(1-х2)(х+2) решите уравнение

Answer 1

(1-2x)(4x²+2x+1)=8(1-x²)(x+2)
1-8x³-8x-16+8x³+16x²=0
16x²-8x-15=0
D=64+960=1024
x1=(8-32)/32=-24/32=-0,75
x2=(8+32)/32=40/32=1,25