Ask your own question, for FREE!
Mathematics 8 Online
OpenStudy (anonymous):

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

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!
Latest Questions
laylasnii13: Who wanna write or make a song with me???
3 hours ago 0 Replies 0 Medals
kaelynw: art igg
2 hours ago 9 Replies 1 Medal
XShawtyX: Art
20 hours ago 6 Replies 0 Medals
Nina001: teach me how to draw or just tell me the basics
22 hours ago 2 Replies 1 Medal
XShawtyX: We doing another drawing gimme ideas to add to this
1 day ago 9 Replies 1 Medal
RAVEN69: What is x 3+y 3+z 3=k
1 day ago 20 Replies 1 Medal
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!