b). f(a+h) - f(a) = [4(a+h)2+2(a+h)-4] - [4a2+2a-4]
= 4(a2+2ah+h2)+2a+2h-4-4a2-2a+4
= 8ah + 4h2 + 2h
Latianna W.
asked • 02/08/16f(x)=4x^2+2x-4
a.) f(a+3) b.) f(a+h)-f(a)
Follow
•
3
Add comment
More
Report
2 Answers By Expert Tutors
Inactive Tutor answered • 02/08/16
Tutor
New to Wyzant
F(a+3) = 4(a+3)^2 + 2(a+3) - 4
= 4(a^2+6a+9) + 2a + 6 - 4
= 4a^2 + 26a + 38
Still looking for help? Get the right answer, fast.
Ask a question for free
Get a free answer to a quick problem.
Most questions answered within 4 hours.
OR
Find an Online Tutor Now
Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.
