Ответ:
-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
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Answers & Comments
Ответ:
-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