作业帮几道分解因式的题,2X²-4X= 8m²n+2mn=a²x²y-axy²=-2x²/12xy²+8xy³=9(m+n)²-(m-n)²=2x³-8x=x²+14x+49=3ax²+6axy+3ay²=-2x²/12xy²+8xy³=输入错误，应该是-2x²
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几道分解因式的题,2X²-4X= 8m²n+2mn=a²x²y-axy²=-2x²/12xy²+8xy³=9(m+n)²-(m-n)²=2x³-8x=x²+14x+49=3ax²+6axy+3ay²=-2x²/12xy²+8xy³=输入错误，应该是-2x²
几道分解因式的题,
2X²-4X=
8m²n+2mn=
a²x²y-axy²=
-2x²/12xy²+8xy³=
9(m+n)²-(m-n)²=
2x³-8x=
x²+14x+49=
3ax²+6axy+3ay²=
-2x²/12xy²+8xy³=
输入错误，应该是-2x²-12xy²+8xy³=
另外还有
xy(x-y)-x(x-y)²=
-a+1.966²=
-12xy+x²+36y²=
(a²+b²)-4a²b²=
(三十六分之一a - 三分之一)a+1=
2(a-1)²-12(a-1)+18=
几道分解因式的题,2X²-4X= 8m²n+2mn=a²x²y-axy²=-2x²/12xy²+8xy³=9(m+n)²-(m-n)²=2x³-8x=x²+14x+49=3ax²+6axy+3ay²=-2x²/12xy²+8xy³=输入错误，应该是-2x²
紫凌圣樱 ：
2x²-4x
=2x(x-2)
8m²n+2mn
=2mn(4m+1)
a²x²y-axy²
=axy(ax-y)
-2x²-12xy²+8xy³
=2x(4y³-6y²-x)
9(m+n)²-(m-n)²
=[3(m+n)]²-(m-n)²
=[3(m+n)+m-n][3(m+n)-m+n]
=(3m+3n+m-n)(3m+3n-m+n)
=(4m+2n)(2m+4n)
=4(2m+n)(m+2n)
2x³-8x
=2x(x²-4)
=2x(x+2)(x-2)
x²+14x+49
=(x+7)²
3ax²+6axy+3ay²
=3a(x²+2xy+y²)
=3a(x+y)²
2x(x-2) 2mn(m+1) axy(ax-y) 4(2m+n)(m+n) 1x(x+2)(x-2) (x+7)² 3a(x+y)²