分解因式(x²-6x+9/x²-9)+(x³-4x²+4x/x²+3x)快点啊,
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/27 03:50:28
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分解因式(x²-6x+9/x²-9)+(x³-4x²+4x/x²+3x)快点啊,
分解因式(x²-6x+9/x²-9)+(x³-4x²+4x/x²+3x)
快点啊,
分解因式(x²-6x+9/x²-9)+(x³-4x²+4x/x²+3x)快点啊,
原式=(x-3)²/(x+3)(x-3)+x(x²-4x+4)/x(x+3)
=(x-3)/(x+3)+(x²-4x+4)/(x+3)
=(x-3+x²-4x+4)/(x+3)
=(x²-3x+1)/(x+3)
(x²-6x+9/x²-9)+(x³-4x²+4x/x²+3x)
=(x-3)²/(x-3)(x+3)+x(x-2)²/x(x+3)
=(x-3)/(x+3)+(x-2)²/(x+3)
=(x-3+x²-4x+4)/(x+3)
=(x²-3x+1)/(x+3)
额,真不会,讨厌那个东西,烦死了