4x的三次方-18x2 27的因式分解-搜答案-大师作文网

X³+Y³=(X+Y)(X²-XY+Y²)

原式=(x^4+xy³)-(2y^4+2x³y)=x(x³+y³)-2y(x³+y³)=(x-2y)(x³+y³)=(x

3x的三次方-[x的三次方+（6x的平方-7x)]-2(x的三次方-3x的平方-4x)=3x³-x³-6x²+7x+2x³-6x²-8x=4x

-4x的平方+16x=-4x(x-4)-4x的三次方y+16x的二次方=-4x²（xy-4）y的二次方-16xy的三次方=y²（1-16xy）提示：因式分解,运用提公因式法

x²y³-2x(4xy³)=x²y³-2x²y³=-x²y³

=xy(4x²+4xy+y²)=xy(2x+y)²

4x的三次方y+4x²y²+xy的三次方=xy（4x²+4xy+y²）=xy（2x+y）²

(x-n)*(x^2+x*n+n^2)

x的三次方+8y三次方=(x+2y)(x平方-2xy+4y平方）

x³y-xy³=xy(x²-y²)=xy(x+y)(x-y)

x^3＋x^3＝2x^3x^3－x^3＝0a^2•（－a^4）＝－a^6－a^2•（－a^4）＝a^6－x•x^2＝－x^3(－x)^2•x^3＝x^5

x⁴+x³+4x²+3x+3=x⁴+x³+x²+3x²+3x+3=x²(x²+x+1)+3(x²

xy(x+y)²-4x³y³=xy[(x+y)²-4x²y²]=xy(x+y+2xy)(x+y-2xy)

x(x+2y)(x-2y)

x^2(x^2-4x+4)-x^2+4x-4=0(x(x-2))^2-(x-2)^2=0x^2-3x+2=0x=1,2x^2-x-2=0X=2,-1

4x的三次方+4x²+x=X(4X平方+4X+1)=X(2X+1)平方

x^3+x-y^3-y=(x^3-y^3)+(x-y)=(x-y)(x^2+xy+y^2)+(x-y)=(x-y)(x^2+xy+y^2+1).x^3-x^2-y^3+y^2=(x^3-y^3)-(x

您好：x的三次方(y-x)的三次方-(x-y)的三次方=x的三次方(y-x)的三次方+(y-x)的三次方=（x³+1）(y-x)³=（x+1）（x²-x+1）(y-x)&

17x的9次方,上式为2x的9次方-64x的9次方+81x的9次方

顺便说一下,我算的算式是x^4-(2*x)*(2*x)*(2*x)+2^x=4共4个根,都是一样复杂,我给你贴了其中一个.