Question

解一道不等式.不等式x^2/3-2x≥1的解集是多少那是X的平方比上3-2X,≥1

Answer 1

由题意,

x^2/(3-2x)≥1

x^2/(3-2x)-1>=0

[x^2-(3-2x)]/(3-2x)>=0

(x+3)(x-1)(3-2x)>=0

(x+3)(x-1)(2x-3)