(x-1)(30-1/2(x-10))-(x-10)275
计算(x*x+4x+5)/(x+2)-(x*x+6x+10)/(x+3)+1
(2x-2)(x-1)=0 x(x-5)=5x-10
(X-X*20%-18-(X-X*20%-18)*10%=X*1/2-3(过程)
(x/x-1)+(5x-2)/x*x-x=1 求x(有图)
10x²+30x+20约分 怎么会变成10(x+1)(x+2) x³+2x²-x-2约分怎
计算:x^2-1/x^2+4x+4÷(x+10)×2x+4/x-1
(1)2x的10次方+x的8次方.x²-x.x³.x的6次方
计算:1/(x^2-7x+10)+1/(x^2-x-2)+1/(x^2+5x+4)+1/(x^2+11x+28)=( )
(1)当x=2时,求代数式2x²(x²-x+1)-x(2x³-10x²+2x)的
(x+1分之x+6)-(x^+3x+2分之3x^+10x+4)+(x+2分之2x+1)=0,解这个方程
(x-1)(30-1/2(x-10))-(x-10)275
[x(x+1)+x平方(x-1)]+(-3x)