Find f(-2) if f(x) = x4 + 2x² - 1

asked Apr 7, 2021 101k views

4 votes

Find f(-2) if
f(x) = x4 + 2x² - 1

5.1k points

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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.

Joe Borg answered Apr 11, 2021

5.4k points

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