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(x - 5)(x - 6)
mohon tandai sebagai jwban terbaik ya...
x2 -5x -6x + 30 = 0
x(x-5) - 6(x-5) = 0
(x-6) (x-5) = 0
x-6 =0 x-5=0
x = 6 atau x = 5
faktornya pilih salah satu
5 atau 6