Question

Decide 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

Help please!
Best answer and a fan!

Answer 1

@satellite73

Answer 2

Hint: The part of the quadratic formula that can be used to determine whether or not a quadratic equation can be solved by factoring is also known as the discriminant.

Answer 3

I've been stuck on this for like 2 days, and I haven't been able to submit my quiz, I don't even know where to start.

Answer 4

Is it going to be one of these −b b^2 − 4ac 2a or is it going to be a numeral?

Answer 5

if \(b^2-4ac\) is a perfect square, like say \(25\) or \(49\) then \(\sqrt{b^2-4ac}\) is a whole number, so you have rationals answers, so you can factor

Answer 6

Is the answer 25?

Answer 7

if \(b^2-4ac\) is not a perfect square, then you cannot factor using whole numbers or fractions

Answer 8

no, 25 is not the answer, it is an example of a perfect square

Answer 9

Ugh, I hate this.

Answer 10

it is really not such a big deal
if the discriminant \(b^2-4ac\) is a square, then you can factor
if it is not a square, then you cannot

Answer 11

the quadratic formula
\[\frac{-b\pm\sqrt{b^2-4ac}}{2a}\] has a square root in it
if the number inside the radical is a perfect square, then you will have a fraction
if you have a fraction, you can factor

Answer 12

the answer is 25 Actually.