Question

Medal and fan will be awarded! I really need help on this question please!!

Solve the absolute value equation:
|x^{2}-2x-7| = -9x-3

Answer 1

try

Answer 2

CAN YOU TRY?

Answer 3

dude, i dont know what to do .___.

Answer 4

WHAT DO YOU NORMALLY DO WHEN SOLVING FOR ABSOLUTE VALUES?

Answer 5

....make everything positive? why all caps omg

Answer 6

so it's x^{2}+2x+7 = -9x-3 ?

Answer 7

No. It is def not that (no caps).

if the thing in the abs is positive, then it is equal to the other thing.

|a| = b -> a = b

but if the thing in the abs is negative then

|a| = b -> a = -b

The abs has forced it to be pos, but it is really neg, so it's natural self must be = -b

Answer 8

http://tutorial.math.lamar.edu/Classes/Alg/SolveAbsValueEqns.aspx

Answer 9

DO YOU KNOW HOW TO DEAL WITH QUADRATICS?

Answer 10

COMPLETE THE SQUARE, FACTOR, QUADRATIC FORMULA.... ETC

Answer 11

that's the part I'm having trouble on :P

Answer 12

THEN LEARN HOW TO COMPLETE THE SQUARE

Answer 13

http://www.mathsisfun.com/algebra/completing-square.html

Answer 14

ok seriously you're making me feel uncomfortable; can you please stop typing in all caps?

Answer 15

OKAY I WILL STOP TYPING IN CAPS
happy?

Answer 16

one equation will be coming like (x+7/2)^2-11

Answer 17

ok, so what do i do next?

Answer 18

Solve for x... so that's only the one equation.Absolute value always gives 2 equations... so the equation under the MOD if change it's sign and follow the same procedure.

Answer 19

i still dont get it...

Answer 20

do i just punch it in the graphing calc?