Answer:
f(3)=4
Step-by-step explanation:
f(x)=x^2-5
f(3)=3^2-5
f(3)=3*3-5
f(3)=9-5
f(x) = x^2 -5
Find f(3)
This means find x when it is 3 so just substitute 3 for x
f(3) = 3^2 -5
= 9 - 5
f(3) = 4
area of a rectangle =WxH
given
H=4
W=2x2-2
=2
therefore
A=4x2
=8
(X + 4)(X^2 - 1) = x^3 + 4x^2 - x - 4
