(-xy)平方(-xy)三次方-(4x平方y)(-x三次方y四次方)+x五次方y五次方其中...
原式=-x^5*y^5+4x^5*y^5+x^5*y^5=4x^5*y^5=4*(-1)*3^5=-4*243=-972
(-2Xy)的平方(-Xy)的3次方-(4X的平方y-3X)(-X的3次方y的4次方)+X的5...
原式= x^4y^4( xy -3)= (-1)^4*3^4( -1×3-3)= 81×(-6)= -486
(-5xy)的平方·(-xy)的三次方+(4x的平方y-3x)(-x的三次方·y的四次方...
(-5xy)²·(-xy)³+(4x²y-3x)(-x³·y^4)+x^5·y^5 = 25x²y²·(-x³y³)-4x^5y^5+3x^4y^4+x^5·y^5 =-25x^5y^5-4x^5y^5+x^5·y^5+3x^4y^4 =-28x^5y^5+3x^4y^4 (x^5y^5表示x的五次方y的五次方;x^...
化简求值, X=-1 Y=1 4x²-(3y³+5x²) -4(y²-xy)
1、对于同类项(如一次项,二次项)进行分类合并,化成最简式;即 4x²-(3y³+5x²) -4(y²-xy)=4x²-5x²+4xy-3y³-4y²=-x²+4xy-3y³-4y²2、将x,y代入最简式,得到该多项式值 因x=-1,y=1,则 -x²+4xy...
(-5xy)2次方*(-xy)三次方+(4x2次方y-3x)*(-3x三次方y四次方)+x的五次 ...
(-5xy)^2*(-xy)^3+4x^2y*(-3x^3y^4)+x^5y^5 =25x^2y^2*(-x^3y^3)-12x^2y*x^3y^4+x^5y^5 =-25x^5y^5-12x^5y^5+x^5y^5 =-36x^5y^5
4x²y×(-xy²)³等于多少
解:4x²y·(-xy²)³=4x²y·(-x³y⁶)=4x²y·(-1)x³y⁶=4·(-1)·x²·x³·y·y⁶=-4x⁵y⁷
(x-y)^2·(y-x)^3+(x-y)(y-x)^4 (xy)^3·3x^2·(-4x^2y^3)^2
(x-y)^2·(y-x)^3+(x-y)(y-x)^4 =-(x-y)^2(x-y)^3+(x-y)(x-y)^4 =-(x-Y)^5+(x-y)^5 =0 (xy)^3·3x^2·(-4x^2y^3)^2 =x^3y^3×3x^2×16x^4y^6 =48x^9y^9
...y+xy)-3(x的平方y-xy)-4x的平方y,其中x=1,y=-1
图
4x²y×(-xy²)³等于多少
解:4x²y·(-xy²)³=4x²y·(-x³y⁶)=4x²y·(-1)x³y⁶=4·(-1)·x²·x³·y·y⁶=-4x⁵y⁷
4x平方y.(-xy平方)立方怎么算
4x的平方yx(-x的3次方y的6次方)=-4x的5次方y的7次方.或在客户端右上角评价点【满意】.是我前进的动力!你的采纳也会给你带去财富值的.我们相互学习!如有不明白,直到完全弄懂此题为止!不要客气!