Question

what is a negative discriminant?

Answer 1

it means that b^2-4ac<0 in a equation like ax^2+bx+c=0

Answer 2

so the negative discriminant would be the equation in that form?

Answer 3

nope, the negative discriminant mean that when you resolve this equation with the -b+-sqrt(b^2-4ac)/2a the normal formula for equation of 2th degrees, you have not solution

Answer 4

if you start with a quadratic equation like
\[x^2+4x+10=0\] then
\[b^2-4ac=16-4\times 10=-24\] that means the equation has no real solution, and instead has two complex solutions

Answer 5

Ohhh!! Thank you guys. I might need more help on this so please stick around. Haha. I need some help on this question, Could you guys help me with it also? I'm sorry. /:

Answer 6

you know how to resolve quadratic equation?

Answer 7

no problem, just post them

Answer 8

Yes, I think so at least. I'll try this problem, and see what i get.

Answer 9

you will get lots of answers, more than you can use

Answer 10

But here is the question, What are the solutions of 4x^2 + x = –3?

Answer 11

-1+-sqrt(1-4*(4*3))/8

Answer 12

simply apply the formulas, do you see that you have a negative discriminant?

Answer 13

I don't know what i did wrong, But I ended up with -7 \[\pm\] \[\sqrt{?}\] 7 / 8

Answer 14

a square root don't make solution in rational number, so, the equation doesn't have solution ;)

Answer 15

oh, that came out all wrong, i'm sorry. -7(+/-)sqrt 7 / 8

Answer 16

why 7/8?

Answer 17

I didn't know how to put 8 under the whole equation. It's suppose to be under the -7 to the root 7.