x^2y-3xy^2+2yx^2-y^2x请写出过程和答案(^2是平方的意思)谢谢!
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x^2y-3xy^2+2yx^2-y^2x请写出过程和答案(^2是平方的意思)谢谢!
x^2y-3xy^2+2yx^2-y^2x
请写出过程和答案(^2是平方的意思)谢谢!
x^2y-3xy^2+2yx^2-y^2x请写出过程和答案(^2是平方的意思)谢谢!
x^2y-3xy^2+2yx^2-y^2x
=x^2y+2x^2y-3xy^2-xy^2
=(1+2)x^2y-(3+1)xy^2
=3x^2y-4xy^2
3xy+xy+2x²y+yx²+3x²y等于多少
xy^2-x-yx^2+y变为(y-x)(xy+1)xy^2-x-yx^2+y化为(y-x)(xy+1)感觉不像十字相乘法.
xy-3xy+2yx-yx
-x^2y+5xy^2-yx^2合并同类项
因式分解x^2+xy+3x+3yx^2+xy+3x+3y 因式分解
x^2y-3xy^2+2yx^2-y^2x化简
X^2Y-3XY^2+2YX^2-Y^2X=?
化简 x²y-3xy²+2yx²-y²x
x²y-3xy²+2yx²-y²x
x²y-3xy²+2yx²-y²x,急用!
x²y-3xy²+2yx²-y²x(列算式)
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2x²y+3xy²+5xy-6yx+2 合并同类项
合并同类项 2x的平方y+3xy的平方+5xy-6yx+2
(xy-x^2)÷x^2-2xy+y^2/xy*x-y/y^2*yx^-2(xy-x^2)÷{x^2-2xy+y^2/xy}*{x-y/y^2}*{yx^-2}
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化简(2xy-y)-(-y+yx)得多少?
已知x-y=6,xy=-1,求(2x+3x-2xy)-(x+4y+xy)-(3yx-2x+2y)的值