A community for students.
Here's the question you clicked on:
← 55 members online
 0 viewing
mckayla_04
 3 years ago
olve 4x2 = 12x + 40.
mckayla_04
 3 years ago
olve 4x2 = 12x + 40.

This Question is Closed

bahrom7893
 3 years ago
Best ResponseYou've already chosen the best response.2Try this one yourself, come on!

bahrom7893
 3 years ago
Best ResponseYou've already chosen the best response.2first step should be moving everything over to one side and dividing everything by 4

mckayla_04
 3 years ago
Best ResponseYou've already chosen the best response.0Thats the Point, I dont know how.

bahrom7893
 3 years ago
Best ResponseYou've already chosen the best response.2Ok, i'll show u this ex. Try the next one: 4x^2 = 12x + 40 4x^2  12x  40 = 0

bahrom7893
 3 years ago
Best ResponseYou've already chosen the best response.2now divide everything by 4: x^2  3x  10 = 0

bahrom7893
 3 years ago
Best ResponseYou've already chosen the best response.2Now use the discriminant formula: D = (3)^2  4*(1)*(10) = 9 + 40 = 49

bahrom7893
 3 years ago
Best ResponseYou've already chosen the best response.2x1 = (b  sqrt(D))/(2a) x2 = (b +sqrt(D))/(2a)

bahrom7893
 3 years ago
Best ResponseYou've already chosen the best response.2x1 = (3  7)/2 = 2 x2 = (3+7)/2 = 5
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.