The best thing Sunil can do is to factor 6 out of the variable terms. The equation will then look like this:
6(x^2+4x) = -5
Then if we like to proceed and solving the quadratic formula the next step would be dividing both sides with 6 making the equation:
(x^2+4x) = -5/6
Then we have isolated the constants from the variable. Then we proceed with completing the square and so on util we get out solution.