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Find f(3) if f(x) = x^4 + 2x² - 1

Find f(3) if f(x) = x^4 + 2x² - 1-example-1
User Klaussner
by
7.2k points

1 Answer

1 vote

Given


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

in order to find f(3) we must replace every x in the function with a 3 and simplify:


f(3)=(3)^4+2(3)^2-1=81+2(9)-1=80+18=98.

So f(3)=98.

User Campi
by
7.4k points
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