x的四次方加6x的平方y的平方加8y的四次方
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0.16x的四次方y的平方-121/144x的平方y的四次方=16/100x⁴y²-121/144x²y⁴=x²y²(4/25x
x的四次方+y的四次方-3乘x的平方乘y的平方==x^4-2x^2y^2+y^4-x^2y^2=(x^2-y^2)^2-x^2y^2=(x^2+xy-y^2)(x^2-xy-y^2)
X2+Y2-4X-6Y+13=0X2-4X+4+Y2-6Y+9=0(X2-4X+4)+(Y2-6Y+9)=0(x-2)2 +(y-3)2=0所以,x-2=0 x=2y-
7x^4-11x²y²-6y^4=(x²-2y²)(7x²+3y²)=(x-√2y)(x+√2y)(7x²+3y²)②7
原式=(x²-y²)(x²-4y²)=(x+y)(x-y)(x+2y)(x-2y)
(2x³y-1/2x²y-3/2)×4x的平方y的三次方=8x的五次方y的四次方-2x的四次方y的四次方-6x的平方y的立方
原式=x^4+4x²y²+4y^4-x²y²=(x²+2y²)²-(xy)²=(x²+xy+2y²)
先分解因式,后乘法.(X^4-Y^4)/(X^3+X^2Y+XY^2+Y^3)=(X-Y)(X+Y)(X^2+Y^2)/(X^3+X^2Y+XY^2+Y^3)=(X-Y)(X^3+X^2Y+XY^2+
x^2/(x^4+1)=33x^4+3=x^2两边平方9x^8+18x^4+9=x^4两边减去9x^49x^8+9x^4+9=-8x^4所以x^4/(x^8+x^4+1)=-9/8再问:标准答案是:1
x的四次方-3x的平方y的平方+2y的四次方=(x²)²-3x²y²+2(y²)²=(x²-y²)(x²-2y
6X的四次方减11
原式=[(x²+xy)+y²][(x²+xy)+3y²]+y^4=(x²+xy)²+4(x²+xy)y²+3y^4+y^
原式=[x/(x-y)]*[y^2/(x+y)]-[x^4y/(x^2+y^2)(x^2-y^2)]/[x^2/(x^2+y^2)]=xy^2/(x^2-y^2)-x^2y/(x^2-y^2)=xy(
你确定是这样的式子?424x+3x+36y如果是这样的话应该是分不出来的
X四次方+X²Y²+X²Y²-X²Y²+Y四次方=(X²+Y²)²-X²Y²
(x的平方-2xy)的平方+2y的平方(x的平方-2xy)+y的4次方=(x^2-2xy+y^2)^2=(x-y)^4
-14x的平方y的平方+x的四次方+y的四次方=(x的4次方+2x²y²+y的4次方)-16x²y²=(x²+y²)²-16x
xy-1/2(x²y²)-1/3(xy)-1/2(x²y²)+x^4y^4=2/3(xy)-x²y²+x^4y^4这应该是最简的了
x²+2xy+y²+x⁴-y⁴=(x+y)²+(x²+y²)(x²-y²)=(x+y)²+(x&