Ask
your own question, for FREE!

Mathematics

OpenStudy (anonymous):

Use the quadratic formula to solve -4x2 + 4x + 80 = 0

Still Need Help?

Join the QuestionCove community and study together with friends!

OpenStudy (anonymous):

quadratic formula is \[(-b \pm \sqrt{b ^{2}-4ac})/2a\] Let a=-4, b=4, c=80 \[(-4 \pm \sqrt{16-4(-4)(80)})/ 2a\] We can see from the discriminant that this will have no real roots (the discriminant is the part under the radical, and it is very clearly negative. Since we can't take the square root of a negative in the real domain, we must use complex numbers). Would you like help solving for the complex numbers? I can help you if you need.

Can't find your answer?
Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!

Join our real-time social learning platform and learn together with your friends!

Latest Questions

CherryBlossom:
Plz Help! Question: If granola costs $2.20 per pound, how much does 0.8 pound of granola cost? Options: $1.

37 minutes ago
1 Reply
2 Medals

CherryBlossom:
Plz Help! If granola costs $2.20 per pound, how much does 0.8 pound of granola co

46 minutes ago
0 Replies
0 Medals

kekeman:
What is the base case of a recursion? A condition that prevents a recursive call

8 hours ago
0 Replies
0 Medals

midnightriver46:
3. Analyze the ongoing relationship between Eastern and Western Europe after the fall of Rome, including the causes and effects of the schism between the ch

11 hours ago
0 Replies
0 Medals

lemon1boy1:
Triangle RST has vertices located at R (2, 3), S (4, 4), and T (5, 0). Part A: Find the length of each side of the triangle.

10 hours ago
1 Reply
0 Medals

anonymous26:
You measure my life in hours and I serve you by expiring. Iu2019m quick when Iu2019m thin and slow when Iu2019m fat.

32 minutes ago
6 Replies
2 Medals

MidniteSunny:
Use the figure below to answer the question that follows: Intersecting triangles ACE and BDF.

16 hours ago
2 Replies
0 Medals

loveandhatemath:
At a dog shelter, a 28-pound bag of dog food will feed 42 dogs. How many dogs would you expect to feed with a 14-pound bag of dog food? (Input only whole nu

16 hours ago
2 Replies
0 Medals