解不等式:7x^2+13x-2/(x+1)(x-2)>=0

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解不等式:7x^2+13x-2/(x+1)(x-2)>=0
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解不等式:7x^2+13x-2/(x+1)(x-2)>=0
解不等式:7x^2+13x-2/(x+1)(x-2)>=0

解不等式:7x^2+13x-2/(x+1)(x-2)>=0
(7x^2+13x-2)/(x+1)(x-2)>=0
(7x-1)(x+2)/(x+1)(x-2)>=0
(x+1)(x-2)≠0,
x≠-1,x≠2
原不等式等则于:(7x-1)(x+2)(x+1)(x-2)>=0且x≠-1,x≠2
零点为:x=-2,-1,1/7,2
可得原不等式的解为:
x