Simplifying and Solving Quadratics

Place the solutions (roots, zeros,x-intercepts) for the given graph.

The graph of a quadratic function is shown. What are the zeros of the function?

SELECT TWO correct answers.

• already simplified

Answer explanation

Electrical engineers also use radical expressions for measurements and calculations. 

Simplify:

• 6x²

• 18x²

Answer explanation

Simplify the expression:

• 8√6
• 6√6
• 8√5
• 64√6

The graph of a quadratic function is shown. What are the roots/solutions of the function?

SELECT TWO correct answers.

Solve for the values of x:
(x - 3)(x + 6) = 0

• { -3, -6 }
• { 3, -6 }
• { -3, -6 }
• { 3, 6 }

Solve
x² + 2x - 24 = 0

• x = -6, x = 4
• x = 6, x = -4
• x = 12, x = -2
• x = 8, x = -3

Solve
x² + 9x + 20 = 0

• x = -2, x = -10
• x = -3, x = -4
• x = -4, x = -5
• x = -4, x = -6