x^4y-7x^2y^2+6-3xy^3-4x^3按字母x的降幂排列和按y的升幂排列,
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x^4y-7x^2y^2+6-3xy^3-4x^3按字母x的降幂排列和按y的升幂排列,
x^4y-7x^2y^2+6-3xy^3-4x^3按字母x的降幂排列和按y的升幂排列,
x^4y-7x^2y^2+6-3xy^3-4x^3按字母x的降幂排列和按y的升幂排列,
x^4y-7x^2y^2+6-3xy^3-4x^3
=x^4y-4x^3-7x^2y^2-3xy^3+6...按x降幂
=-4x^3+x^4y-7x^2y^2-3xy^3+6...按y升幂
x^4y-4x^3-7x^2y^2-3xy^3+6
根据题意,只能这么写了
字母x的降幂排列=x^4y-4x^3-7x^2y^2-3xy^3
按y的升幂排列=-4x^3+x^4y-7x^2y^2-3xy^3
按字母x的降幂排列:x^4y-4x^3-7x^2y^2-3xy^3+6
按y的升幂排列:-4x^3-3xy^3-7x^2y^2+x^4y+6
看看吧
x^4y-4x^3-7x^2y^2-3xy^3+6
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x降幂 x^4y-4x^3-7x^2y^2+x^4y+6
y升幂 6-4x^3+x^4y-7x^2y^2-3xy^3
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