2(x+30-(x方+3x)分解因式2(x+3)-(x方+3x)分解因式改下

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2(x+30-(x方+3x)分解因式2(x+3)-(x方+3x)分解因式改下2(x+30-(x方+3x)分解因式2(x+3)-(x方+3x)分解因式改下2(x+30-(x方+3x)分解因式2(x+3)

2(x+30-(x方+3x)分解因式2(x+3)-(x方+3x)分解因式改下
2(x+30-(x方+3x)分解因式
2(x+3)-(x方+3x)分解因式改下

2(x+30-(x方+3x)分解因式2(x+3)-(x方+3x)分解因式改下
2(x+3)-(x方+3x)
=-x²-x+6
=-(x²+x-6)
=-(x+3)(x-2)

2x+30-(x²+3x)
=30-x²-x
=-(x²+x-30)
=-(x+6)(x-5)

2(x+3)-(x方+3x)
=-x²-x+6
=-(x²+x-6)
=-(x+3)(x-2)