(x+1)2-2(x2-1)+(x-1)² (x2-3x+1)(x2-3x-3)-5 因式分解
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(x+1)2-2(x2-1)+(x-1)²(x2-3x+1)(x2-3x-3)-5因式分解(x+1)2-2(x2-1)+(x-1)²(x2-3x+1)(x2-3x-3)-5因式分解
(x+1)2-2(x2-1)+(x-1)² (x2-3x+1)(x2-3x-3)-5 因式分解
(x+1)2-2(x2-1)+(x-1)² (x2-3x+1)(x2-3x-3)-5 因式分解
(x+1)2-2(x2-1)+(x-1)² (x2-3x+1)(x2-3x-3)-5 因式分解
(x+1)²-2(x²-1)+(x-1)²
=(x+1)²-2(x+1)(x-1)+(x-1)²
=[(x+1)-(x-1)]²
=2²
=4
(x²-3x+1)(x²-3x-3)-5
=[(x²-3x)+1][(x²-3x)-3]-5
=(x²-3x)²-2(x²-3x)-3-5
=(x²-3x)²-2(x²-3x)-8
=[(x²-3x)+2][(x²-3x)-4]
=(x²-3x+2)(x²-3x-4)
=(x-1)(x-2)(x+1)(x-4)
(x+1)2-2(x2-1)+(x-1)²
=(x+1)2-2(x=1)(x-1)+(x-1)²
=【(x+1)-(x-1)】²
=2²
=4
(x2-3x+1)(x2-3x-3)-5
=(x²-3x)²-2(x²-3x)-3-5
=(x²-3x)²-2(x²-3x)-8
=(x²-3x+2)(x²-3x-4)
=(x-1)(x-2)(x+1)(x-4)
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