Answer:
As
Hence, the option 'a' is true.
Step-by-step explanation:
Given the expression
[tex]f\left(x\right)=-x^2-5x+18[/tex]
Putting x = -5 in the expression
[tex]f\left(-5\right)=-\left(-5\right)^2-5\left(-5\right)+18[/tex]
[tex]=-\left(-5\right)^2+5\cdot \:5+18[/tex]
[tex]=-5^2+5\cdot \:5+18[/tex]
[tex]=-5^2+25+18[/tex]
[tex]=43-5^2[/tex]
[tex]=43-25[/tex]
[tex]=18[/tex]
Therefore,
Hence, the option 'a' is true.
