Given f(x)=-x^(2)-9x+19, find f(-4) Answer:

Substitute x into function: Substitute the value of x into the function. We are given f(x) = -x^2 - 9x + 19 and we need to find f(-4). Substitute -4 for x in the function. f(-4) = -(-4)^2 - 9(-4) + 19Calculate square of -4: Calculate the square of -4. (-4)^2 = 16 Now substitute this value into the function. f(-4) = -(16) - 9(-4) + 19Multiply 9 by -4: Multiply 9 by -4. 9(-4) = -36 Now substitute this value into the function. f(-4) = -(16) - (-36) + 19Simplify the function: Simplify the function. f(-4) = -16 + 36 + 19Add numbers together: Add the numbers together. f(-4) = 20 + 19Add final two numbers: Add the final two numbers. f(-4) = 39

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Given
f(x)=-x^(2)-9x+19, find
f(-4)
Answer:

Given $f(x)=-x^{2}-9 x+19$ , find $f(-4)$ $\newline$ Answer:

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Algebra 2

Evaluate expression when two complex numbers are given

Full solution

Q. Given

f(x)=-x^{2}-9 x+19

, find

f(-4)

\newline

Answer:

Substitute $x$ into function: Substitute the value of $x$ into the function. $\newline$ We are given $f(x) = -x^2 - 9x + 19$ and we need to find $f(-4)$ . $\newline$ Substitute $-4$ for $x$ in the function. $\newline$ $f(-4) = -(-4)^2 - 9(-4) + 19$
Calculate square of $-4$ : Calculate the square of $-4$ . $(-4)^2 = 16$ Now substitute this value into the function. $f(-4) = -(16) - 9(-4) + 19$
Multiply $9$ by $-4$ : Multiply $9$ by $-4$ . $9(-4) = -36$ Now substitute this value into the function. $f(-4) = -(16) - (-36) + 19$
Simplify the function: Simplify the function. $f(-4) = -16 + 36 + 19$
Add numbers together: Add the numbers together. $f(-4) = 20 + 19$
Add final two numbers: Add the final two numbers. $f(-4) = 39$