Question

I will award medals!

Decide 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

Answer 1

Please help @julian25

Answer 2

discriminant

Answer 3

What do you mean

Answer 4

this
b2 − 4ac
is called discriminant

Answer 5

it tells u if the roots r complex equal or different

Answer 6

So to find the value I just plug the discriminant in

Answer 7

yes plug the values in
b2 − 4ac

Answer 8

if \(b^2-4ac\) is a perfect square, like say \(0\) or \(25\) then you can factor using integers
if not, then the solutions will be either irrational or complex, so you will not be able to factor using integers

Answer 9

So 2x^2+49-4(2)(3)?

Answer 10

in
\[2x^2 + 7x + 3 = 0\] you have \(a=2,b=7,c=3\) compute \(b^2-4ac\)

Answer 11

b=7
a=2
c=3

Answer 12

oh so 49-24??

Answer 13

I'm probably wrong, right?

Answer 14

49-24
right

Answer 15

Really?!

Answer 16

oh

Answer 17

yes really

Answer 18

oh :D. LOL, don't do that LOL

Answer 19

Wait, should I simplify

Answer 20

yes

Answer 21

You just have to find the discriminant or solve the whole quad eq? @santiagosoto

Answer 22

Got it, thanks though