A community for students.
Here's the question you clicked on:
 0 viewing
gfields444
 3 years ago
Solve. 2x2 + 13x = –20
gfields444
 3 years ago
Solve. 2x2 + 13x = –20

This Question is Closed

mathslover
 3 years ago
Best ResponseYou've already chosen the best response.1ok lemme give you a brief intro. to quadratic equation : \[\large{ax^2+bx+c=0}\] > general form of a quadratic equation

mathslover
 3 years ago
Best ResponseYou've already chosen the best response.1what do you think is the above equation , a quadratic equation?

mathslover
 3 years ago
Best ResponseYou've already chosen the best response.1ok good , so remember that the roots of a quadratic equation are : \[\large{roots =\frac{b\pm \sqrt{b^24ac}}{2a}}\]

mathslover
 3 years ago
Best ResponseYou've already chosen the best response.1put b = 13 , a = 2 and c = 20

mathslover
 3 years ago
Best ResponseYou've already chosen the best response.1ok .. see solve this now : \[\large{\frac{13\pm \sqrt{169160}}{4}}\] \[\large{\frac{13\pm \sqrt{9}}{4}}\]

mathslover
 3 years ago
Best ResponseYou've already chosen the best response.110/4 = 5/2 and 16/4 = 4

gfields444
 3 years ago
Best ResponseYou've already chosen the best response.0Ohhh. Wait okay I see what I did wrong. Thank you!
Ask your own question
Sign UpFind more explanations on OpenStudy
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.