[x(x²y²-xy)-y(x²-x³y)]÷3x²y
[x(x²y²-xy)-y(x²-x³y)]÷3x²y2x乘(二分之一x²-1)-3x(三分之一x²...
[x(x²y²-xy)-y(x²-x³y)]÷3x²y
2x乘(二分之一x²-1)-3x(三分之一x²+三分之二) 要过程 展开
2x乘(二分之一x²-1)-3x(三分之一x²+三分之二) 要过程 展开
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解:[x(x²y²-xy)-y(x²-x³y)]÷3x²y
=[x³y²-x²y-x²y+x³y²]÷3x²y
=[2x³y²-2x²y]÷3x²y
=2x³y²÷3x²y- 2x²y÷3x²y
=2xy/3-2/3
2x ·(½ x²-1)-3x(⅓ x²+⅔)
= x³-2x-x³-2x
= - 4x
=[x³y²-x²y-x²y+x³y²]÷3x²y
=[2x³y²-2x²y]÷3x²y
=2x³y²÷3x²y- 2x²y÷3x²y
=2xy/3-2/3
2x ·(½ x²-1)-3x(⅓ x²+⅔)
= x³-2x-x³-2x
= - 4x
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[x(x²y²-xy)-y(x²-x³y)]÷3x²y
=[x³y²-x²y-x²y+x³y²]÷3x²y
=[2x³y²-2x²y]÷3x²y
=-2/3xy-2/3
2x乘(二分之一x²-1)-3x(三分之一x²+三分之二)
=x³-2x-x³-2x
=-4x
=[x³y²-x²y-x²y+x³y²]÷3x²y
=[2x³y²-2x²y]÷3x²y
=-2/3xy-2/3
2x乘(二分之一x²-1)-3x(三分之一x²+三分之二)
=x³-2x-x³-2x
=-4x
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[x(x²y²-xy)-y(x²-x³y)]÷3x²y
=[x³y²-x²y-x²y+x³y²]÷3x²y
=[2x³y²-2x²y]÷3x²y
=-2/3xy-2/3
2x·(½x²-1)-3x(⅓x²+⅔)
=x³-2x-x³-2x
=-4x
=[x³y²-x²y-x²y+x³y²]÷3x²y
=[2x³y²-2x²y]÷3x²y
=-2/3xy-2/3
2x·(½x²-1)-3x(⅓x²+⅔)
=x³-2x-x³-2x
=-4x
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