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F(x)= -x^2 -4x - 19Find f(-9)

User Chak
by
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1 Answer

1 vote

f(-9)=-64

Step-by-step explanation


f(x)=-(x^2)-4x-19

Step 1

F(-9)

replace the value of x


\begin{gathered} f(x)=-(x^2)-4x-19 \\ f(-9)=-((-9)^2)-(4\cdot-9)-19 \\ f(-9)=-(81)-(-36)-19 \\ f(-9)=-81+36-19 \\ f(-9)=-81+36-19 \\ f(-9)=-64 \end{gathered}

I hope this helps you

User Lfvv
by
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