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Find f(-2) if f(x) = x4 + 2x² - 1
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4 votes
Find f(-2) if
f(x) = x4 + 2x² - 1

User Chilion
by
3.4k points

1 Answer

7 votes

Answer:

23.

Explanation:

Replace the x by -2 and simplify:

f(-2) = (-2)^4 + 2(-2)^2 - 1

= 16 + 2*4 - 1

= 16 + 8 - 1

= 23.

User Joe Borg
by
3.4k points
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