1.M^2(M-1)-4(1-M)^22.49(2m-2x)^2-9(m+x)^23.(3x+4y)-(4y-3x)^24.(x-2)(x-4)+1最好有一点过程
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1.M^2(M-1)-4(1-M)^22.49(2m-2x)^2-9(m+x)^23.(3x+4y)-(4y-3x)^24.(x-2)(x-4)+1最好有一点过程
1.M^2(M-1)-4(1-M)^2
2.49(2m-2x)^2-9(m+x)^2
3.(3x+4y)-(4y-3x)^2
4.(x-2)(x-4)+1
最好有一点过程
1.M^2(M-1)-4(1-M)^22.49(2m-2x)^2-9(m+x)^23.(3x+4y)-(4y-3x)^24.(x-2)(x-4)+1最好有一点过程
1.M^2(M-1)-4(1-M)^2
=(M-1)[M^2-4(M-1)]
=(M-1)(M^2-4M+4)
=(M-1)(M+2)^2
2.49(2m-2x)^2-9(m+x)^2
=[7(2m-2x)+3(m+x)][7(2m-2x)-3(m+x)]
=(17m-11x)(11m-17x)
3.(3x+4y)^2-(4y-3x)^2
=[(3x+4y)+(4y-3x)][(3x+4y)-(4y-3x)]
=8y*6x
=48xy
4.(x-2)(x-4)+1
=x^2-6x+8+1
=x^2-6x+9
=(x-3)^2
已知m>4,化简|m-4|+|7-2m|+|m×m-2m+1|-|m×m-2m-3|
4m(m的平方-2m-1)+m(2m+5)(5-2m)
m*m-2m等于1,则2m*m-4m+2012
m*m-5m-1=0则2m*m-5m+1/m*m
已知m*m+m-1=0,求m*m*m+2m*m-2005
已知m>4,化简:|m-4|+|7-2m|+|m^2-2m+1|-|m^2-2m-3|
化简,:3(m-1)^2+(m+2)(m^2-2m+4)-m(m^2+3m-3)
计算2m+6/m²-4m+4·1/m+3·(m-2)(m+3)/m+3
计算M-M^2/M^2-1*M-1/M除以(M-1/M+1)^2
已知m-1/m=3,m不等于0,求m^2-1/m^2,m^3-1/m^3,m^4-1/m^4
(m+2/m^2-2m)-(m-1)/(m^2-4m+4)除以m-1/m,其中m=4
化简求值(m+2/m²-2m)-(m-1/m²-4m+4)÷(m-1/m) 其中m=4
先化简再求值m^2(m+3)+2m(m^2-1)-(m^4+m^3-m^2)/1/3m其中m等于2013
当m=1/2时,求15m²-9-{-4m²+[5m-8m²-(2m²-m)+9m²]-3m}
解方程 2m-m*m 1=2(m*m-2m)(m*m-2m)
3(m+1)^2+4(m+1)(m-1)-7m(m-1)
m^2-3m+2/m-1·m^2-1/m^2-4
解:“(m-2/m+2+4m/m²-4)÷1/4-m²