rzybert
22.06.2019 •
Mathematics
Given f(x) = 4x4 + 5x3 – 15x2 – 45, find f(–3). a) f(–3) = 3 b) f(–3) = 6 c) f(–3) = 9 d) f(–3) = 12
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Ответ:
C)
f(–3) = 9
Step-by-step explanation:
Given f(x) = 4x^4 + 5x^3 – 15x^2 – 45
f(-3) means let x = -3
f(-3) = 4(-3)^4 +5(-3)^3 – 15(-3)^2 – 45
=4(81) +5(-27) -15(9) -45
= 324 - 135 - 135 -45
=9
Ответ: