(X平方 PX 6)(X平方-3X Q)等于多少
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/11 06:32:59
x(x²-2x+1)-3x(x²-4x+1)=x³-2x²+x-3x³+12x²-3x=-2x³+10x²-2x=-2x
2x^2+x^2+4x+4+x^2+8x+16+x^2+12x+36=5x^2+24x+56=6x^2+22x+12得到:x^2-2x-44=0x1=1+3*(根号5)x2=1-3*(根号5)(根号打
格式有点乱,〖((1-x)/(3-x))^2/((x^2-6x+9)/(9-x^2 ))〗^ ×1/(x^2-2x+1)=〖((1-x)/(3-x))^2/(〖(X-3)〗^2/(
[x(x+1)+x平方(x-1)]+(-3x)=x²+x+x³-x²-3x=x³-2x
原式=(x-1)/(x-3)²-1/(x-3)+2x/(x+3)(x-3)=(x²+2x-3)/(x-3)²(x+3)-(x²-9)/(x-3)²(x
(X的平方+9x)/(x的平方+3x)+(x的平方-9)/(x的平方+6x+9)=x(x+9)/x(x+3)+(x+3)(x-3)/(x+3)²=(x+9)/(x+3)+(x-3)/(x+3
3x^3-3x^2-x^=3x^3-4x^2=x^2(3x-4)
5X²-[X²(5X²-2X)-(2X²-3X)]=5X²-(5X^4-2X^3-2X²+3X)=7X²-5X^4+2X^3-3X
x²-3x+1=0x²+1=3x同时除以xx+1/x=3(x+1/x)²=9x²+1/x²+2=9x²+1/x²=7x²
x平方-6x+8=x²-2×3x+9-9+8=(x-3)²-1=(x-3-1)(x-3+1)=(x-4)(x-2)x平方+x-6=(x-2)(x+3)12+x-x平方=(4-x)(
x平方(3x+5y)平方-y平方(5x+3y)平方=x²(3x+5y)²-y²(5x+3y)²=[x(3x+5y)]²-[y(5x+3y)]²
3x²+2x²-3x-(-x+5x²)=3x²+2x²-3x+x-5x²=-2x其中x=314时,-2x=-2*314=-6285xy-8x
原式=(x+1)²(x-1)²-4(x+1)²=(x+1)²[(x-1)²-4]=(x+1)²(x-1+2)(x-1-2)=(x+1)&su
(4x)*2=x*2+3*216x*2=x*2+9x=根号15/5
(x^2+4x+8)^2+3x(x^2+4x+8)+2x^2=(x^2+4x+8+x)(x^2+4x+8+2x)=(x^2+5x+8)(x^2+6x+8)=(x+(5+√17)/2)(x+(5-√17
2x²-5x+x²+4x-3x²-2=-x-2再问:可以给下过程吗?谢谢再答:=(2x²+x²-3x²)+(-5x+4x)-2=-x-2
x(x²-1)+2x²(x+1)-3x(2x-5)=x³-x+2x³+2x²-6x²+15x=3x³-4x²+14x
2X^2-5X+X^2+4X-3X^2-2=-X-2=-1/3-2=-7/3
[(3x-3y)/(y平方-x平方)+(x平方-2xy+y平方)/(x平方-y平方)-(x平方-x+6)/(x+2)]/(x+y)=【-3/(x+y)+(x-y)/(x+y)-(x-3)]】/(x+y
-3x^2-6x^2-3xy^2=-9x^2-3xy^2=-3x(3x+y^2)