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Mathematics 9 Online
OpenStudy (anonymous):

PLEASE HEEEEELLLLPPPP ME. i dont get this explain everything from the beginning thankies <3 If f( n ) = n2 - n , then f(-4) is _____

Parth (parthkohli):

\(\Large \color{purple}{\rightarrow f(-4) = -4^2 - (-4) }\) \(\Large \color{purple}{\rightarrow f(-4) = 16 + 4 }\) \(\Large \color{purple}{\rightarrow f(-4) = 20 }\)

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