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x²+x-30 ≥ 0
(x+6)(x-5) = 0
x = -6 atau x = 5
+++++ - - - - - - +++++ uji x = 0 maka hsilnya -
-6 5
HP = {x| x ≤ -6 atau x ≥ 5, x∈ bil Real}
semoga membantu ya :)