Question

Solve. 3x2 + 12x = 3

–2 ± sqrt13

–2 ± sqrt7

–2 ± sqrt3

–2 ± sqrt5

Answer 1

do you know the quadratic formula?

Answer 2

not rly im trying to hury aand just get this pre test over with

Answer 3

could u walk me through it

Answer 4

\[\Huge{\color{red}{-b \pm \sqrt{b^2-4ac }\over2a}}\]

Answer 5

rearrange your equation to to the form
\[ax ^{2} +bx-c =0\]
\[3x ^{2} +12x-3 = 0\]

Answer 6

now plug in the a,b,c values and reduce the expression

Answer 7

Wait, if it's a pretest, I'm pretty sure it means that you haven't learned it yet and it's just testing your knowledge. If you don't understand the concept and get exempted, it won't be doing you any good.