(100-2x)(50-2x)=3600
(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)
3x=2(100-x)
(x)-2x·x-x-2x+1=0求x的值,
5*(x-2)=4*(x+3) 2x+(50-x)*4=140 3x-(8-x)=20*4 200x=(x-0.5)*2
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