Ask
your own question, for FREE!
Mathematics
26 Online
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
ykbatman:
Why do you think valentines day is a holiday, and such a popular one?
5 hours ago
9 Replies
3 Medals
Gdub08:
Country song I wrote: Generations of Grace Grandpa's worn Bible, pages soft and t
5 hours ago
24 Replies
5 Medals
Twaylor:
is 2 credits and 5 f's but 1 d enough to pass being a sophomore
9 hours ago
29 Replies
2 Medals
Twaylor:
what is the best snack ((im broke thats why its under finacne
10 hours ago
1 Reply
0 Medals
Breathless:
What do we call the flight from Mecca to Medina by Muhammad and his followers? (h
9 hours ago
4 Replies
1 Medal
Twaylor:
Who is the best rapper (this is under history cus rap has a LOT of history, so mo
11 hours ago
189 Replies
3 Medals