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2x(x + 5) = 0
2x = 0 atau x + 5 = 0
x = 0/2 x = - 5
x = 0
HP-Nya {- 5, 0}
x (2x + 10) = 0
x1 = 0
x2 = -5
HP={0,-5}
terima kasih :D