Question

Which part of the quadratic formula tells you whether the quadratic equation can be solved by factoring?

−b b^2 − 4ac 2a

Use the part of the quadratic formula that you chose above and find its value given the following quadratic equation:

2x^2 + 7x + 3 = 0

Numerical Answers Expected!

Answer 1

About the first part: it's the second one, because you're taking a square root of it. If it's negative, there is no square root of it among the real numbers, so there is no solution, if it's zero, then there is only one soluton and if it's positive, then there are two: -sqrt(b^2-4ac) and sqrt(b^2-4ac). See how they both squared give b^2-4ac.
(Look and the equation describing the roots of a quadratic equation if you don't understand.)

Answer 2

Use the part of the quadratic formula that you chose above and find its value given the following quadratic equation:

2x^2 + 7x + 3 = 0
can you help me solve it

Answer 3

oh wait the total answer is b^2 − 4ac

Answer 4

It's the answer to the first question. As for the equation, you can do it on your own, as you just have to plug the numbers into the equation. I hope you know what I'm talking about?

Answer 5

im so confused can you help me work me through it

Answer 6

?

Answer 7

http://www.purplemath.com/modules/quadform.htm
Try to read and understand this. It's very important to your further understanding of math, I would say.