神马作文网计算（^2-2x+5)^2-2(^2-2x+5)(x^2-2x-3）+（x^2-2x-3)^2=[( )-( )]^2=
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x/x-3-5x/x^2-x-6计算
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
计算：3x/x-5-2x/5-x
计算2x X 4x--3x=
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
计算（x*x+4x+5）/（x+2）-（x*x+6x+10）/（x+3）+1
a*b=2×a+b 计算x*2x*3x*4x*5x*6x*7x*8x*9x=3039 x=
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
2x+3x+4x+5x+x+6x+7x=100
计算： (x+3)(x²-x-2)
计算 (x+3)(x²-x-2)
计算：(3x+2)/5-(x-6)=x/3