Question 4

Let x1

Solving Quadratic Equations

Solve the quadratic equation 4x² + 25 = − 20x by using the Quadratic Formula.

Write your answers in Exact Form and in Approximate Form (Rounded to three

decimal places as needed). Note that in some cases, the Exact Form and the

Approximate Form may be the same.

=

▼

x1 =

x1 =

-b-√b² - 4ac

2a

>

Note: If only one solution exists, x2 will equal DNE

2

4x² + 25 = -20x

Exact Form

and x2

Approximate Form

-b+ √b² - 4ac

2a

x2 =

x2 =

Exact Form

Approximate Form