Answer:


Step-by-step explanation:
The given equation is: 
To find the solution of any quadratic equation we use:

Where:
is the coefficient of the quadratic term.
is the coefficient of the linear term.
is the independent term.
So, according to this, each variables is equal to:

Now, we substitute these values in the formula:




So, one solution has the positive sign, and the other the negative sign. Therefore the solutions are:


As you can see, the solution was founded just by using the formula, identifying the values of a, b and c. Then, solving the formula we all values replaced.