Answer:
F(-5)=25
Step-by-step explanation:
Hi there!
We are given the function:
F(x)=-x²-10x
And we want to find F(-5)
If we want to find f(number), then we will be substituting that number as x into the other side of the function.
In other words, if the function is F(-3), then we would substitute -3 as x in the function, giving us -(-3)²-10(-3)
So for this, we'll substitute -5 as x in the function.
Therefore:
F(-5)=-(-5)²-10(-5)
Going with the order of operations, raise (-5) to the second power
F(-5)=-(25)-10(-5)
Now multiply 25 by -1 (the minus in front of the 25 means -1 * 25)
F(-5)=-25-10(-5)
Multiply -10 by -5
F(-5)=-25 + 50
Add the numbers together
F(-5)=25
Hope this helps!
