Jika f(x)=x-4 maka f(x) + (f(x))² - 3f(x)=
Matematika
Fitryelmi
Pertanyaan
Jika f(x)=x-4 maka f(x) + (f(x))² - 3f(x)=
2 Jawaban
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1. Jawaban dharmawan14
f(x) = x +4.
f(x) + { f(x) }^2 -3f(x)
= (x -4) + (x -4)^2 - 3(x -4)
= x - 4 + x^2 -8x +16 -3x +12
= x^2 -10x + 24 -
2. Jawaban nabilap0
f(x) = x - 4
Maka:
f(x) + (f(x))² - 3f(x)
= (x - 4) + (x - 4)² - 3(x - 4)
= (x - 4) + (x - 4)(x - 4) - (3x - 12)
= x - 4 + x² - 4x - 4x + 16 - 3x + 12
= x² - 10x + 24