### Home > CCA > Chapter 9 > Lesson 9.1.2 > Problem 9-18

9-18.

Use the Quadratic Formula to solve *x*^{2} − 13*x* + 42 = 0. Did your solution match the solution from part (a) of problem 9-17? Homework Help ✎

The Quadratic Formula:

Substitute the values from the equation into the formula.

Evaluate the equation by using the order of operations.

*x* = 6 or 7; yes