### Home > INT3 > Chapter 8 > Lesson 8.1.3 > Problem 8-49

8-49.

Consider the quadratic equation .

Is

a solution to the equation? How can you be sure without solving?Substitute the solution into the equation.

Without solving, predict another solution to the equation. Verify your prediction by checking it.

Any quadratic equation can be solved using the Quadratic Formula. The "

" part of the solution comes from a negative number inside of the square root. What is in front the the square root in the Quadratic Formula?Where does the parabola

intersect the-axis? Explain.Let

and solve.