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Diketahui fungsi f(x) = x² + 4x - 5. Nilai f(-3) =

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Diketahui fungsi f(x) = x² + 4x - 5. Nilai f(-3) = ….

Jawab:

f(x) = x² + 4x – 5

f(-3) = (-3)² + 4(-3) – 5

        = 9 – 12 – 5

f(-3) = -8

Jadi nilai f(-3) = -8.

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