x减y三次方等于多少
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原式=4x^(-6)y^6×(3x²y²)²=4x^(-6)y^6×9x^4y^4=36x^(-2)y^10=36y^10/x²
x^3-2x^2y^2+xy^3=x(x^2+2xy^2+y^3)很高兴为您解答,【学习宝典】团队为您答题.请点击下面的【选为满意回答】按钮,
在根9x²y³中,若x≥0,则y≥0,所以根9x²y³=3xy根y.
(x+y)²=1x²+y²+2xy=1xy=-1(x+y)^3=x^3+y^3+3x^2y+3xy^2=x^3+y^3+3xy(x+y)x^3+y^3=(x+y)^3-3
(x-y)³×(x-y)²×(y-x)=(x-y)³×(x-y)²×[-(x-y)]=-(x-y)的6次方
x³+y³=(x+y)(x²-xy+y²)=x²-xy+y²=(x+y)²-3xy=1-3xy=1/3∴xy=2/9x五次方+y五
x^2+y^2>1?是x^2+y^2
x+y=1则x^2+y^2+2xy=1因为x^2+y^2=3则xy=-1x^3+y^3=(x+y)(x^2-xy+y^2)=1*(3+1)=4
原式=x(x²-4y²)-2y(x²-4y²)=(x-2y)(x+2y)(x-2y)=(x+2y)(x-2y)²
解(x-y)(y-x)²(x-y)³=(x-y)(x-y)²(x-y)³=(x-y)^6
由(1)因式分(x+y)²-(x+y)³=(x+y)²(1-x-y)或者(2)计算:(x+y)²-(x+y)³=x²+2xy+y²
(a)^3/2,(x/2y)^3/2且(x
x^3-y^3=x^3-x^2y+y^2x-yx^2+xy^2-y^3=x^2(x-y)+xy(y-x)+y^2(x-y)=(x-y)(x^2-xy+y^2)
根号x三次方+x二次方等于多少?\回答:(√x^3)+x^2=|x|√x+x^2或(√x)^3+x^2=x√x+x^2或√(x^3+x^2)=|x|√(x+1)你写的太含糊模棱两可不过所有可能我都写上
x^3+3x^2+3x+1
(x+y)^3=x^3+3x^2y+3y^2x+y^3
你要先给出x,y的值才行
(x-y)*(x^2+xy+y^2)
题目是不是(x^3+y^3)/(x+y)?应该等于x^2+xy+y^2