05eviebee 05eviebee

02-01-2019
Mathematics

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If $f(x)=ax^6-bx^4+x-1$ and $f(2)=5$, then what is the value of $f(-2)$?

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sqdancefan sqdancefan

02-01-2019

Answer:

f(-2) = 1

Step-by-step explanation:

The unknown terms are of even degree, so will have the same value for x=2 and x=-2. If we call those terms Q, then ...

... f(2) = Q +2 -1 = 5

... Q = 4

... f(-2) = Q -2 -1 = 4 -3

... f(-2) = 1

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