Question

Solve x2 + 5x = -6.

Answer 1

x = 5 and x = 1

x = -5 and x = -1

x = 3 and x = 2

x = -3 and x = -2

Answer 2

@Squirrels

Answer 3

Ok so what you want to do, is put the equation in quadratic form, which looks like this
\[ax^2+bx+c=0\]

Answer 4

Do you know what to do next? or do you need help?

Answer 5

I need help please

Answer 6

ok so the equation is
\[x^2+5x=-6\]
Thats what it looks like right?

Answer 7

Correct.

Answer 8

ok cool, so what we need to do is make into quadratic form but isolating, so we add 6 by both sides.
\[x^2+5x+6=0\]
See what i did there?

Answer 9

Yeah I do

Answer 10

Ok so now it is in quadratic form. Do you see what i mean?
\[ax^2+bx+c=0\]
\[1x^2+5x+6=0\]

Answer 11

yes

Answer 12

ok now that we have it in quadratic form we plug it into the "quadraric formula"

\[x=\frac{ -b \pm \sqrt{b^2-4ac} }{ 2a }\]
You wanna plug those in for me?

Answer 13

Or do you get what im saying? ;P

Answer 14

yes I et you after I plug those in what do it do?

Answer 15

You solve it, here let me write it for you and then you solve it, deal?

Answer 16

ok

Answer 17

\[x=\frac{ -5\pm \sqrt{5^2-4 \times 1\times6} }{ 2\times1 }\]

Answer 18

ok there ya go, solve that for me and ill tell you if youre right

Answer 19

im going to say c

Answer 20

am I right?

Answer 21

Youre guessing dude -_- . Its not that hard too figure out. Its simple math.

Answer 22

how is it not c...

Answer 23

the bottom of the equation equals 2 positive and theres only one answer with positive 2

Answer 24

im not guessing im sorry, im really dumb when it comes to math

Answer 25

Its not that. You guess that answer in less then a minute. and thats not who you solve it .-.

Answer 26

how* not who

Answer 27

okay well I finished it just the basic stuff and I got x = -5 + over the _ 1 on top of 3