(29-2x)(22-2x)=448.5
(x/x-1)+(5x-2)/x*x-x=1 求x(有图)
f(x)=x²+3x|x-2|
f(x)=-x^2+2x(x>0) 0(x=0) x^2-2x(x
解方程(x-2)X(x的平方-6x-9)=x(x-5)X(x-3)
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
解方程:(x-8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3)
2x+(22-x)=40
(x)-2x·x-x-2x+1=0求x的值,
先化简再求值先化简再求值:(x-x/x+1)(x+1/x^2+4x+4)(x^2-4/x^2-2x),其中x=-0.5
初一数学x*x+2x+5的值为7,请求3x*x+6x+3的值.因为x*x+2x2x+3=3x(x*x+2x)+2x+2x
解方程:(x^2-2)(-x^2+2)=(2x-x^2)(2x+x^2)+4x
(x-1)/x -(1-x)/(x+1)=(5x-5)/(2x+2) x等于多少