Answer: 
Step-by-step explanation:

First, solve the square binomial.


Now, distribute the 4 and 8ab respectively.

Combine like terms. (I'll group them so that you can see them more clearly)



Step-by-step explanation:
f(x) = -7x² - x
g(x) = 9x² - 4x
(f - g)(x) = (-7x² - x) - (9x² - 4x)
(f - g)(x) = (-7x² - 9x²) + (-x + 4x)
(f - g)(x) = -16x² + 3x
(f - g)(1) = -16(1)² + 3(1)
(f - g)(1) = -16.1 + 3
(f - g)(1) = -16 + 3
(f - g)(1) = -13
Answer:
wuts the question
Step-by-step explanation:
if there isnt one thx for the points