(x-2)(x∧2-3)=0
2x²+7x+1=0 x(x-1)=3x+7
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)
解方程:(x-8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3)
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
(x)-2x·x-x-2x+1=0求x的值,
不等式|(x+3)/x|>(x+3)/x,不等式(x²-9)/(x-2)>0
x(x-14)二0*x平方十|2x十27=0,x平方=x+56,x(5x+4)=5x+4,4x平方-45=3|x,-3x
lim(4x^3-2x^2+x)/(3x^2+2x)=?(x->0)
搞不懂x^-3x+1=0求 (1)x+1/x(2)x^+1/x^
已知,集合A={x|(x+2)(3-x)>0},B={x|x的平方-4x+a