7x的三次方[x的三次方-x(4x的平方 1)]
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/08 18:35:42
X³+Y³=(X+Y)(X²-XY+Y²)
原式=(8x^6-6x^6-12x^5)÷(-2x²)=(2x^6-12x^5)÷(-2x²)=-x^4+6x³再问:=(2x^6-12x^5)÷(-2x²)=
原式=(x^4-7x²+6)+(x³-x)=(x²-1)(x²-6)+x(x²-1)=(x²-1)(x²+x-6)=(x+1)(x
1.(-2x²)³-(-x³)²=-8x^6-x^6=-9x^62(-x)^8×(y^6)^(1/2)(x⁴×y⁴)²×y
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
y=(cosx+sinx+x^3)^(1/x)lny=ln(cosx+sinx+x^3)/x利用罗比塔法则:lim[x-->+∞]lny=lim[x-->+∞]ln(cosx+sinx+x^3)/x=
=xy(4x²+4xy+y²)=xy(2x+y)²
(x-n)*(x^2+x*n+n^2)
x+y的三次方*x+y的二次方=(x+y)^3(x+y)^2=(x+y)^(3+2)=(x+y)^5
x的三次方+8y三次方=(x+2y)(x平方-2xy+4y平方)
x的4次方+x³-7x²-x+6=(x的4次方+x³)-(7x²+7x)+(6x+6)=x³(x+1)-7x(x+1)+6(x+1)=(x+1)(x&
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
-7x的三次方y的平方-21x的平方y的三次方=-7x²y²(x+3y)再问:求第二题再答:(x-y)的三次方-(y-x)的平方=(x-y)的三次方-(x-y)的平方=(x-y)&
请说明x的趋向!
x^2+1)(x^2-1)=x(x^2+1)(x+1)(x-1)(2)=(m-n)^2-2(m-n)+1=(m-n-1)^2(3)=(x^2+4)^2-(4x)^2=(x^2+4+4x)(x^2+4-
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)&
解-(-x²)³×(-x²)²-x×(-x³)³——是这个吗=x^6×x^4-x×(-x^9)=x^10+x^10=2x^10
17x的9次方,上式为2x的9次方-64x的9次方+81x的9次方