Answer:
Step-by-step explanation:
F(x) = x² - 8x + 5
f(-1) = (-1)² - 8*(-1) + 5
= 1 + 8 + 5 = 14
f(-1) = 14.
Answer: ![\text{Area of the square shaped traffic sign }=16x^2+9+24x](https://tex.z-dn.net/?f=%5Ctext%7BArea%20of%20the%20square%20shaped%20traffic%20sign%20%7D%3D16x%5E2%2B9%2B24x)
Step-by-step explanation:
Given: The side of the square shaped traffic sign = 4x+3
We know that the area of square is given by:-
![Area= side^2](https://tex.z-dn.net/?f=Area%3D%20side%5E2)
Therefore, the area of the side of the square shaped field is given by:-
![Area=(4x+3)^2](https://tex.z-dn.net/?f=Area%3D%284x%2B3%29%5E2)
We know that , ![(a+b)^2=a^2+b^2+2ab](https://tex.z-dn.net/?f=%28a%2Bb%29%5E2%3Da%5E2%2Bb%5E2%2B2ab)
Therefore,
![(4x+3)^2=(4x)^2+(3)^2+2(4x)(3)\\=16x^2+9+24x](https://tex.z-dn.net/?f=%284x%2B3%29%5E2%3D%284x%29%5E2%2B%283%29%5E2%2B2%284x%29%283%29%5C%5C%3D16x%5E2%2B9%2B24x)
Hence, ![\text{Area of the square shaped traffic sign }=16x^2+9+24x](https://tex.z-dn.net/?f=%5Ctext%7BArea%20of%20the%20square%20shaped%20traffic%20sign%20%7D%3D16x%5E2%2B9%2B24x)