已知m减m的负一次方等于三求
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m+1/m=3m²+1/m²+2=9m²+m^(-2)=7m²+1/m²=7m²+1/m²-2=5(m-1/m)²=5m
x+x^-1=m两边平方x^2+2+x^-2=m^2x^2+x^-2=m^2-2
mn²=-6-mn(m的平方n的五次方减mn的三次方减n)=-mn[(mn²)²*n-(mn²)*n-n]=-mn[(-6)²*n-(-6)*n-n]
已知m^2-n^2=mn求m^2/n^2+n^2/m^2通分得m^4+n^4/m^2n^2而m^4+n^4=m^4-2m^2n^2+n^4+2m^2n^2=(m^2-n^2)^2-2m^2n^2=(m
:已知(-3分之1xyz)的平方*M=x的2n+2次方y的n+3次方z的4次方/5x的2n-1次方y的n+1次方z,且自然数x,z满足2的x次方*3的z-1次方=72,求M的值(-1/3xyz)^2*
A的2M次方为25则:(A的M次方)^2=25则:A的M次方=5则:A的-M次方=1/A的M次方=1/5
a.b互为相反数,则a²=b²c.d互为倒数,则cd=1m的绝对值等于二.m=2或-2a²-b²+(cd)(负一次方)÷(1-2m+m²)=0+1÷1
x的平方加x的负二次方的值为7,x的四次方加x的负四次方的值为47再问:有过程吗
分子:(m+1)(m+3)(2m-m^2)=m(m+1)(m+3)(2-m)=-m(m+1)(m+3)(m-2)分母:(m^3+m^2)(m-2)(m+3)=m^2(m+1)(m-2)(m+3)进行约
x+1/x=3(x+1/x)^2=9x^2+1/x^2+2=9x^2+1/x^2=7x^2+1/x^2-2=7-2(x-1/x)^2=5x-1/x=±√5x^2-1/x^2=(x+1/x)(x-1/x
m²-√10m+1=0同除以mm+1/m=√10m^4+m^(-4)=m^4+1/m^4=(m²+1/m²)²-2=[(m+1/m)²-2]²
正负三倍根号五好吧切鄙视你
3的m次方=2433的m次方=3的5次方m=53的n次方=93的n次方=3的平方n=2m+n=5+2=7如果本题有什么不明白可以追问,如果满意请点击右下角“好评”另外发并点击我的头像向我求助,请谅解,
m+m^(-1)=m+1/m=3(m+1/m)^2=m^2+1/m^2+2=9m^2+1/m^2=9-2=7m^3+m^(-3)=m^3+1/m^3=(m+1/m)(m^2-m*1/m+1/m^2)=
x+1/x=M(x+1/x)^2=M^2x^2+2+1/x^2=M^2x^2+1/x^2=M^2-2
m^2+1/m^2=(m-1/m)^2+2=3^2+2=9+2=11
m^2+m^(-2)=(m+m^(-1))^2-2=9-2=7[m-m^(-1)]^2=[(m+m^(-1)]^2-4=9-4=5m-m^(-1)=土根号5
因为m是方程x^2-3x+1=0的根,所以m^2-3m+1=0,m^2-3m=-1(1)2m^3-7m^2+5m+2005=2m^3-6m^2-m^2+5m+2005=2m(m^2-3m)-m^2+5