Question

If f(n) = n²-n, then f(-4)

Answer 1

`\frak{Hi!}`

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We have the expression-:

`\boldsymbol{\sf{f(n)=n^2-n}}`, and we should evaluate that for

`\boldsymbol{\sf{f(-4)}}`. To do that simply put in the value for x-:

`\boldsymbol{\sf{f(-4)=(-4)^2-(-4)=16+4=20}}`

done!!

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Answer 2

20

Explanation:

Just replace n by -4