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3 years ago

Find f(-5) if f(n) = n^3 + 3n^2

Mathematics

1 answer:

Andrew [12]3 years ago

6 0

Plug in -5 for n
-5^3 + 3(-5)^2
-125 + 3(25) = -125 + 75 = -50
f(-5) = -50

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<span>To simplify one by one, step by step, proving that they are the same:
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$\frac{10}{20} \frac{\div2}{\div2} = \frac{5}{10} \frac{\div5}{\div5} = \boxed{\frac{1}{2} }$ $\end{array}}\qquad\quad\checkmark$
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