Solve for x: .

Given:

Now Solving the quadratic equation so obtained by Quadratic formula.

We know that the solution of equation ax² + bx + c = 0 is given by:

For our equation, a = 2, b = – 19 and c = 42

Applying the value in the formula we get,

x = 24/4 or x = 14/4

So, the values of x are x = 12 or x = 7