(1) -3X^-2XY-8XY-(-5Y^2)-2X^2-Y^2(2) 3(-2+3X-X^2)-(4-3X+X^2)(3) 3X^2-{5X-2(2X-3)}(4) (2X^2-1/2+3x)-4(X-X^2+1/2)要具体过程、不要错误答案、这里没有乘法、只有加减、^2代表2的平方、麻烦速度、谢谢
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(1) -3X^-2XY-8XY-(-5Y^2)-2X^2-Y^2(2) 3(-2+3X-X^2)-(4-3X+X^2)(3) 3X^2-{5X-2(2X-3)}(4) (2X^2-1/2+3x)-4(X-X^2+1/2)要具体过程、不要错误答案、这里没有乘法、只有加减、^2代表2的平方、麻烦速度、谢谢
(1) -3X^-2XY-8XY-(-5Y^2)-2X^2-Y^2
(2) 3(-2+3X-X^2)-(4-3X+X^2)
(3) 3X^2-{5X-2(2X-3)}
(4) (2X^2-1/2+3x)-4(X-X^2+1/2)
要具体过程、不要错误答案、这里没有乘法、只有加减、^2代表2的平方、麻烦速度、谢谢
(1) -3X^-2XY-8XY-(-5Y^2)-2X^2-Y^2(2) 3(-2+3X-X^2)-(4-3X+X^2)(3) 3X^2-{5X-2(2X-3)}(4) (2X^2-1/2+3x)-4(X-X^2+1/2)要具体过程、不要错误答案、这里没有乘法、只有加减、^2代表2的平方、麻烦速度、谢谢
(1) -3X^-2XY-8XY-(-5Y^2)-2X^2-Y^2
=-3x^2-2xy-8xy+5y^2-2x^2-y^2
=-5x^2-10xy+4y^2
(2) 3(-2+3X-X^2)-(4-3X+X^2)
=-6+9x-3x^2-4+3x-x^2
=-4x^2+12x-10
(3) 3X^2-{5X-2(2X-3)}
=3x^2-5x+4x-6
=3x^2-x-6
(4) (2X^2-1/2+3x)-4(X-X^2+1/2)
=2x^2-1/2+3x-4x+4x^2-2
=6x^2-x-5/2
已知(x+1)*(x+1)=-Iy-1I,求2(xy-(5xy)*(5xy))-3((xy)*(xy)-xy)
5xy^2-{2x^y-[3xy^2-(xy^2-2x^2y)]/(-1/2xy)}
(8xy-3x平方)-5xy-2(3xy-2x平方),其中,x=2,y=-1
化简:3x^2-[5xy-(x^y-3xy)+4x^2y-8xy]
化简:(1)-7x平方+(6x平方-5xy)-2(3y平方+xy-x平方)(2)8xy-3xy+2xy-4分之3xy+2分之1xy+xy(3)14m平方+13n平方+12mn-14m平方-13n平方
5x^2y/-1/2xy*3xy^2
5x^2y-3xy^2+4xy-14xy^2+4xy-2x^2y(化简)
化简!1、(x^2-xy)+xy+y^2 2、3(x^2-xy)-xy+y^2
整式乘法..1.3xy(x²y-xy²+xy)-xy²(2x²-xy+2x)2.(x-1)(x²-4x+3)-x(x²-5x+2)
5xy²-{2x²y-[3xy²-(4xy²-2xy²)]} 其中x=2,y=-1
计算(3x^2y-xy^2+1/2xy)/(-1/2xy)
计算(-3分之1xy²)²×[xy(2x-y)+xy²]=
化简 2(xy-xy²+3)-(-4xy²+xy-1) 其中,x等于--4,y等于-3
已知(x+1)²+|y-1|=0,求2(xy-5xy²)-(3xy²-xy)得值
计算:3xy(x²y-xy²+xy)-xy²(2x-xy+2x)
(5x-4y-3xy)+(8x+y-2xy)合并同类项
2xy(5xy的2次方+3xy-1)
2xy(5xy的2次方+3xy-1)