x三次方-0.027=0
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sin三次方x+cos三次方xtanx-sinx=0sin³x+cos³x*tanx-sinx=sin³x+cos³x*sinx/cosx-sinx=sin
8(2x-5)³=272(2x-5)=32x-5=3/22x=6+1/2x=3+1/4(1-x)³=64(1-x)=4x=-(4-1)x=-3(x+3)³+27=0(x+
如果x是实数,则由已知得x=-1,原式=0其实,将1+x+x^2+x^3+...+x^2019分组(每四项一组,共505组),每一组的和都是0,也能得到所求和为0
x(x+根号3+1)(x+根号3-1)+(x+根号3-1)=0(x+根号3-1)【x平方+(根号3+1)x+1】=0所以,x1=1-根号3x2=【-(根号3+1)+12的四次方根】/2x3=【-(根号
x三次方+3x²-10x=X(X^2+3X-10)=X(X+5)(X-2)=0X1=0X2=-5X3=2
又是我,刚才回答你的那个:(x-6)(x-根号2)(x+根号2)=0
X的三次方+Y的三次方+Z的三次方=(x+y)(x2-xy+y2)+Z的三次方=-z(x2-xy+y2)+Z的三次方(x+y=-z)=-z(x2-xy+y2-z2)=-z[x(x-y)+(y+z)(y
题目是-x^3+3x^2-3x+5=0吗?核对一下有没有弄错的再问:其实题目是1/(x-2)+1/(x-1)=x-2/(1-x)再答:貌似你给的式子化不过去啊,还有,小月满满已经把你那个3次方的解决了
x^3+y^3+z^3-3xyz=(x+y+z)(x^2+y^2+z^2-xy-yz-zx)=(x+y+z)[(x-y)^2+(y-z)^2+(z-x)^2]/2≥0x^3+y^3+z^3≥3xyz
1.x²-3x+1=0,所以X不等于0把两边同时除以X得x+x/1=3又,x+x/1=3两边平方得x²+1/x²+2=9x²+1/x²=7x²
8(x-0.5)³+1/10³=02³(x-0.5)³=-1/10³(x-0.5)³=-1/(10³×2³)(x-0.5
2x³-x²+4x-2=0x²(2x-1)+2(2x-1)=0(x²+2)(2x-1)=0∵x²+2≥2∴2x-1=0∴2x=1∴x=2分之1很高兴为
1.为了简化算式,设A=2000的立方根,B=2001的立方根,C=2002的立方根A^3=2000,B^3=2001,C^3=2002A^3x^3=B^3y^3=C^z^3y=Ax/Bz=Ax/C2
x的三次方-0.027=0求xx的三次方=0.027x=0.3
x^3-3x^2+4=0x^3-2x^2-(x^2-4)=0x^2(x-2)-(x+2)(x-2)=0(x-2)(x^2-x-2)=0(x-2)^2(x+1)=0x=2-1
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
8x^3+1=0(2x+1)(4x^2+1+2x)=0→x=-1/2
原式=x³-2x²-x²+x+2=x²(x-2)-(x²-x-2)=x²(x-2)-(x-2)(x+1)=(x-2)(x²-x-1
x三次方+x平方-5x+3=0x^3+x^2-2x-(3x-3)=0x(x^2+x-2)-3(x-1)=0x(x+2)(x-1)-3(x-1)=0(x-1)(x^2+2x-3)=0(x-1)(x+3)
原式等于(x-1)(x^2-3x+2)=0得到(x-1)^2(x-2)=0后面就不解了再问:不一样啊再答:化简错了,应该是(x-1)(x^2+x-2)=0,不好意思再问:谢谢,请问化简有什么窍门么?再