Question

Solve 6x^2 +3x = 15?
I completed the square and got
x = (-1 + rad11)/2
and x = (-1 - rad11)/2
But neither of them actually work.
Help?

Answer 1

Have you tried the quadratic equation formula?
\[-b \pm \sqrt{b ^{2}-4ac}/2a \]

Answer 2

put your equation in the following order
\[6x ^{2} + 3x -15 =0\]

Answer 3

where
a= 6
b=3
c=-15

Answer 4

substitute the values in the equation i gave you earlier, and that will give you de value of x

Answer 5

Oh ok you're right. Thanks!

Answer 6

welcome