Solve the equation x^2 + 3x -18 using the quadratic formula.

Step 1: Identify the coefficients Method: The normal way to identify coefficients is using the fact that every quadratic equation is of the form ax^2 + bx +cSo in this particular question a = 1, b = 3 and c=-18Step 2: Substitute the coefficients into the quadratic formulaThe quadratic formula is the following x = -b +/- sqrt(b^2 - 4ac) / 2a.After substituting the coefficient you will get x = -3 +/- sqrt(9 + 72) / 2 this suggests x = -3 +/- 9 / 2, hence x = -6 or x = 3.You have solve the equation given using the quadratic formula :)