Question

x^2+9x+11=7

Answer 1

what methods do you know?

Answer 2

Factoring
Quadratic Formula
Completing the square

Answer 3

factoring & quadratic formula. I used quadratic formula & got 32.5 & -41.5.
@CrazyCountryGirl , how'd you get -0.4689 & -8.531?

Answer 4

@queen_, subtract 7 from both sides

(When you do a quadratic formula or factoring you have to set the equation equal to zero first)

Answer 5

so, a should be 1, b = 9 & c = 4 if i subtract 7 from both sides? @GABI_J

Answer 6

first right the equation after subtracting 7 from both sides.

Answer 7

x^2+9x+4=0, after you subtract 7 from both sides. @GABI_J
@CrazyCountryGirl , Haha, its ok! Lol.

Answer 8

(yes you are right...)

Answer 9

you wouldn't want to factor, b/c you won't get 9x...
so completing the square or quadratic formula.

Answer 10

k, so now i use the quadratic formula?

Answer 11

Plug in numbers into the quadratic formula but first give me the
a=
b=
c=

Answer 12

as you said b/f
a=1 b=9 c=4
correct

Answer 13

yesuhhhhh! correct!

Answer 14

so what do you get?

Answer 15

I got... -4.5 and 37, so -4.5+37=32.5 and -4.5-37=-41.5. Correct? no?

Answer 16

wait no!!!!!!!!!!! -4.5 and 18.5, so -4.5+18.5=14 and -4.5-18.5=-23

Answer 17

that's a better way to write your answer, it is exact, as opposed to using exponents of the square root....