8(х-2)(х²-1)=(4х²-2х+1)(2х+1)
решите

-1,25; 0,75

Объяснение:

8(x-2)(x²-1)=(4x²-2x+1)(2x+1)

(8x-16)(x²-1)=8x³+4x²-4x²-2x+2x+1

8x³-8x-16x²+16=8x³+1

8x³-8x-16x²+16-8x³-1=0

-16x²-8x+15=0

16x²+8x-15=0

D = 64 + 960 = 1024

x1 = -8-32/32 = -1,25

x2 = -8+32/32 = 0,75