anonymous
  • anonymous
PLEASE HELP!!!!!!! Let f(x) = 5x2 + 5x − 4. Find and simplify the following. f (4/a)
Mathematics
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
\[f(\frac{ 4 }{ a }) = 5(\frac{ 4 }{ a })^{2}+5(\frac{ 4 }{ a })-4\]
anonymous
  • anonymous
Can you solve it from that?
anonymous
  • anonymous
no thats where im stuck

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

anonymous
  • anonymous
Okay, be sure to square both the 4 and the a in the first term
anonymous
  • anonymous
so you would end up with 5(16/a^2) +20/a - 4
anonymous
  • anonymous
okay then what?
anonymous
  • anonymous
Then you need to combine into a fraction by multiplying the fractions by the LCD so you'd have 5 x (16+20a)/(a^2)
anonymous
  • anonymous
then you still have the -4 to deal with; so in the end you'll have 5 x (16+20a-4a^2)/a^2
anonymous
  • anonymous
then simplify from there, let me know what you get
anonymous
  • anonymous
80+100a-20a^2 / a^2
anonymous
  • anonymous
are there any terms you can cancel?
anonymous
  • anonymous
a^2 ?
anonymous
  • anonymous
so would it be 80+100a-20 ?
anonymous
  • anonymous
hello?
anonymous
  • anonymous
yes, one sec
anonymous
  • anonymous
ok so the final answer is 100a+60?
anonymous
  • anonymous
I'd leave it as the fraction: (-4a^2 + 20a +80)/a^2
anonymous
  • anonymous
ok thanks

Looking for something else?

Not the answer you are looking for? Search for more explanations.