Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
Find 'p' if 3x^2+2x+3p=0 has real & different roots.
.
.
ANSWER = p<1/9
 one year ago
 one year ago
Find 'p' if 3x^2+2x+3p=0 has real & different roots. . . ANSWER = p<1/9
 one year ago
 one year ago

This Question is Closed

koli123ableBest ResponseYou've already chosen the best response.0
I have no idea on solving this question....
 one year ago

XavierBest ResponseYou've already chosen the best response.2
A quadratic has real and different roots if the descriminant is greater than zero: \[\Delta > 0\]
 one year ago

koli123ableBest ResponseYou've already chosen the best response.0
delta?? u mean discriminant?
 one year ago

XavierBest ResponseYou've already chosen the best response.2
What do you mean? Set the discriminant to be greater than zero b^24ac > 0
 one year ago

koli123ableBest ResponseYou've already chosen the best response.0
I mean how is discriminant greater than zero can u explain?
 one year ago

harsimran_hs4Best ResponseYou've already chosen the best response.0
if d > 0 then there are real and different roots d = 0 real and equal roots d < 0 imaginary roots
 one year ago

agent0smithBest ResponseYou've already chosen the best response.0
Real and different...? I'm guessing you mean real and distinct. But yes you can use the discriminant. When the discriminant is less than zero, it will have complex/imaginary roots, as the quadratic formula takes the square root of the discriminant ( http://www.purplemath.com/modules/quadform.htm ) \[3x^2+2x+3p=0 \]\[ax^2+bx+c = 0\] so here, a=3, b = 2 and c = 3p discriminant is \[b^24ac > 0 \]
 one year ago

koli123ableBest ResponseYou've already chosen the best response.0
If D>0 then sqrt(b^24ac) is a real number and roots are real and unequal
 one year ago

harsimran_hs4Best ResponseYou've already chosen the best response.0
\[x = \frac{ b \pm \sqrt{b^2  4ac} }{ 2a }\] try putting different values of d and check out
 one year ago

koli123ableBest ResponseYou've already chosen the best response.0
as D>0 and D=b^24ac so, (2)^24*3*3p>0 436p>0 4>36p 1/9>0
 one year ago

XavierBest ResponseYou've already chosen the best response.2
You lost a p at the end
 one year ago

koli123ableBest ResponseYou've already chosen the best response.0
oh sorry I typed it in hurry
 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.