-(-4xy^2)^3*(-y^3)^5同底数幂的乘法(3)
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-(-4xy^2)^3*(-y^3)^5同底数幂的乘法(3)-(-4xy^2)^3*(-y^3)^5同底数幂的乘法(3)-(-4xy^2)^3*(-y^3)^5同底数幂的乘法(3)-(-4xy^2)^
-(-4xy^2)^3*(-y^3)^5同底数幂的乘法(3)
-(-4xy^2)^3*(-y^3)^5
同底数幂的乘法(3)
-(-4xy^2)^3*(-y^3)^5同底数幂的乘法(3)
-(-4xy^2)^3*(-y^3)^5
=-(4xy^2)^3*(y^3)^5
=-64x^3y^6*y^15
=-64x^3y^21
x^3y(-4y)^2+(-7xy)^2*(-xy)-5xy^3*(-3x)^2
5x^3y*(-3y)^2+(-6xy)^2*(-xy)+xy^3*(-4x^2)
化简:3x^2-[5xy-(x^y-3xy)+4x^2y-8xy]
5x^2y-3xy^2+4xy-14xy^2+4xy-2x^2y(化简)
计算:5xy^2-[3xy^2-(4xy^2-2x^2y)]+2x^2y-xy^2
5xy^2-(3xy^2-(4xy^2-2x^2y))+2x^2y-xy^2求
因式分解 x-xy+3y-3x 2x+xy-y-4x+5y-6
4xy-[(x²+5xy-y²)-(3xy-1/2y)]x=3,y=-6
已知x-y=3xy,求5x+2xy-5y/x-4xy-y的值
诺x+y=6,xy=4 求(5x-4y-3xy)-(8x-y+2xy)
(-5/2xy)(2/3xy²-2xy+4/3y)
若x-y=4,xy=1,则(2x+y-2xy)-(3x+2y+xy)-(4xy+3y-5x)=
-3(xy-2x²)-[y²-(5xy-4x²)+2xy]
(-2xy+2x+5y)-(3xy+2y-2x)-(x+4y+xy)其中x-y=4xy=-1
xy-2{xy-[3x^2y-(4xy^2+0.5xy)]+4x^2y}+6xy^2
(X-3xy+4xy-y)-[-2x-2(xy-3/2xy)-y]+6xy的过程
5xy²-{2x²y-[3xy²-(4xy²-2xy²)]}=
(-3xy+2xy)-(4xy+xy)