Question

What are the exact solutions of x2 + 3x + 1 = 0?

Answer 1

a. x = the quantity of 3 plus or minus the square root of 13 all over 2
b. x = the quantity of negative 3 plus or minus the square root of 13 all over 2
c. x = the quantity of 3 plus or minus the square root of 5 all over 2
d. x = the quantity of negative 3 plus or minus the square root of 5 all over 2

Answer 2

use quadratic formula

Answer 3

Okay

Answer 4

\[\frac{ -b \pm \sqrt{-b-4(a)(c)} }{ 2a}\]
where \[a ^{2}+b+c=0\]

Answer 5

Which one's a b and c?

Answer 6

Your equation is \[x ^{2}+3x+1\]
So your values would be a = 1 b =3 c=1
Plug in and solve

Answer 7

Correction to my quadratic formula for to square the b inside the square root

Answer 8

\[\frac{ -b \pm \sqrt{-b ^{2}-4(a)(c)} }{ 2(a) }\] sorry bout that

Answer 9

thats okay

Answer 10

-3+/- sqrt(-3^2-4)/2

Answer 11

-3+/- sqrt(13)/2

Answer 12

so that's the answer?

Answer 13

\[\frac{ -3\pm \sqrt{-3^{2}-4} }{2}\] Solve under the square root

Answer 14

You haven't simplified

Answer 15

I did, its -3 +/ sqrt(13)/2

Answer 16

3 squared is 9 subtract 4 is 5

Answer 17

ohhhh okay

Answer 18

Can you guys help me with a couple other similar questions?

Answer 19

Simply factorize -.-
x^2 + 2x + x + 1 = 0
(x+2)(x+1) = 0
x = -1,-2

Answer 20

Thats wrong answer @ilmc1 @Mike546

Answer 21

It's the right answer for the correct equation

You used 2x not 3x

Answer 22

What are the exact solutions of x2 + 3x + 1 = 0?

Answer 23

well its either -3+/- sqrt(13)/2 or -3+/- sqrt(5)/2

Answer 24

i wrote 3x = 2x + x

Answer 25

Just look at my answer once more.. :/

Answer 26

This is a multiple choice problem that did not ask for factoring, read @ilmc1 first response it shows you the options.

Answer 27

Ah yes I completely skimmed over that

Answer 28

But what about my answer ?? it cant be wrong if its not given in options

Answer 29

i understand what you are saying.. but i have checked this answer many times

Answer 30

Really? Alright lets go over it we'll see if I am wrong (happens)

\[(x^2+2x) (x+1)\]

Answer 31

\[x(x+2) (x+1)\]

Answer 32

There is your simplified form

Answer 33

this is equation, isnt it ?
\[x^2 + 3x + 1 = 0\]

Answer 34

OH MY GOD SORRY BRO !! MY BAD pellet @Mike

Answer 35

:)

Answer 36

Nevermind please ! :)