Diketahui f(x) = x^2 - 2x + 1 . jika f(a) = 16, nilai a adalah...
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Pertanyaan
Diketahui f(x) = x^2 - 2x + 1 . jika f(a) = 16, nilai a adalah...
2 Jawaban
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1. Jawaban indirakusuma
f(a) =a2 - 2a + 1 = 16
a2 - 2a + 1 - 16 =0
a2 - 2a - 15 = 0
(a + 3)(a - 5) = 0
a = -3 atau a = 5 -
2. Jawaban didikn
f(a) =a2 - 2a + 1 = 16
a2 - 2a + 1 - 16 =0
a2 - 2a - 15 = 0
(a + 3)(a - 5) = 0
a = -3 V a = 5