7m(x-5)^3-2n(x-5)^2 因式分解要过程
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(2x-3)(x-n)=2x^2+5x+m求m与n
(x-5)(x-n)是X^2-3x+m因式分解的结果求M,N
x^m÷x^n=x^m*x^n,求7(2n-1)^5
若x^m÷x^n=x^m×x^n,求7(2n-1)^5的值
[(m-n)^2*(n-m)^3]^2/(m-n)^4 [(-x^5)^2]^3/[(x^4)^2/(x^2)^3]
已知单项式M,N满足3x(M-5x)=6x^2y^3+N,求M,N
整式的乘法!(3m+2n-1)(3m-2n+1)(5x-7)(7x-5)(x-1)(x-2)-(x-3)(x+4)
计算:(1)(m-n)^2*(n-m)^5*(m-n)^5 (2)(-x)^2*x^3+2x^3*(-x)^2-x*x^4
计算:x·x^n+2-x^n·x^3(m-n)^5·(n-m)^2·(n-m)^2
若(2x+3)(x+m)=2x+5x-n,则m=?n=?若(2x+3)(x+m)=2x+5x-n,则m=?n=?
一道数学题.比较大小的.M:(x^2-1)(x^2+x+1)-x(x^3+x^2-1)+5N:(2x-7)(3x+8)-x(6x-5)+55比较M,N的大小
已知-7x^m-2n y^4与9分之8x^5 y^m+n 是同类项,求(m-2n)^2 -3(m+n)-5(m-2n)^2 +m+n的值
(m+n)x^n y^(m-2)(3xy^2+5x^2y)=21x^m y^(n+1)+35x^(m+1)y^n M和N 要 (m+n)x^ny^(m-2)(3xy^2+5x^2y)=21x^my^(n+1)+35x^(m+1)y^n=7x^(m-1)y^(n-1)(3xy^2+5x^2y)m+n=7n=m-1m-2=n-1n=3,m=4
若(x+m)(x-5)=x^2-2x+3n,则m-n=正确结果是8,
已知x^m=2,x^n=5,求x^3m+x^2n的值?
若M=(x-3)(x-5).n=(x-2)(x-6),试比较m与n的大小
若(2X-M)(3X+1)=6X的平方+5X+N,求M,N
若(2X-M)(3X+1)=6X的平方+5X+N,求M,N