x²-4x+2
=2(x²-2x+1)
=2(x-1)²
x²-3x-28
=(x+4)(x-7)
a^3+a²-a-1
=a²(a+1)-(a+1)
=(a+1)(a²-1)
=(a+1)²(a-1)
因式分解 2x²-4x+2 x²-3x-28 a^3+a²-a-1
因式分解 2x²-4x+2 x²-3x-28 a^3+a²-a-1
2x²-4x+2 x²-3x-28 a^3+a²-a-1
2x²-4x+2 x²-3x-28 a^3+a²-a-1
数学人气:531 ℃时间:2019-08-18 08:13:57
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