A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 4 years ago
Which part of the quadratic formula tells you whether the quadratic equation can be solved by factoring?
−b b2 − 4ac 2a
Use the part of the quadratic formula that you chose above and find its value given the following quadratic equation:
2x2 + 7x + 3 = 0
anonymous
 4 years ago
Which part of the quadratic formula tells you whether the quadratic equation can be solved by factoring? −b b2 − 4ac 2a Use the part of the quadratic formula that you chose above and find its value given the following quadratic equation: 2x2 + 7x + 3 = 0

This Question is Closed

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0The discriminant. b^24ac must be >0 for real number factors.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0It's [b ^{2}4ac\] But I don't remember why or how. To solve it it's easy, think of your equation in this way: a is paired with x because x is earlier in the alphabet, so is a b is paired with y because y is after x in the alphabet, as is b to a and c is always your number on it's own.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0no idea how to do this its a pretest i just need a numerical answer to the second part

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Don't you have the quadratic formula?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0You can also do it by grouping

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0You just have to plug the numbers from the equation they gave you into the answer you chose for the first part and solve it.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Actualy, grouping is not going to work here. Use the quadratic formula

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0if i seen it i would understand

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0The whole quadratic formula isn't needed, just the part of the equation picked in part 1. Take the b^2  4ac and put in the values of b, a, and c and compute it using a calculator.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Oh yes, only the discriminant is needed. Skimmed that part.

phi
 4 years ago
Best ResponseYou've already chosen the best response.0The second part of the question is asking you to find b^2  4ac So you need to find a,b, and c, and use the above formula the a, b, and c come from a x^2 + bx + c so match your quadratic 2x^2 + 7x + 3 = 0 to find a,b, and c.
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.