Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
Find the constant k so that the quadratic equation 2x^2 + 5x  k = 0 has two real solutions?
 one year ago
 one year ago
Find the constant k so that the quadratic equation 2x^2 + 5x  k = 0 has two real solutions?
 one year ago
 one year ago

This Question is Closed

terenzreignzBest ResponseYou've already chosen the best response.0
Quadratic Formula!!! :D
 one year ago

aroubBest ResponseYou've already chosen the best response.2
First you find the delta: b^24ac 5^24(2)(k) 25+8k because it has two real solutions..so, 25+8k>0 8k>25 k>25/8
 one year ago

HighlyEducated87Best ResponseYou've already chosen the best response.0
Good Job u got it 1st!!!!!
 one year ago

terenzreignzBest ResponseYou've already chosen the best response.0
\[\frac{b \pm \sqrt{b^{2}4ac}}{2a}\] Yeah, as per @aroub delta (I thought it was discriminant) determines the number of roots you have, as well as their nature... Delta is that expression in the radical in the quadratic formula :D
 one year ago

HighlyEducated87Best ResponseYou've already chosen the best response.0
It is discriminant but i didn't need a quadratic formula.
 one year ago

aroubBest ResponseYou've already chosen the best response.2
When you want to find K, no need!
 one year ago

HighlyEducated87Best ResponseYou've already chosen the best response.0
i know!!! Thanks
 one year ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.