Review for Quadratics quiz quizziz

What is this formula?

• This is the speed of light formula.
• This is the quadratic formula.
• This is the zero product property.
• This is scary.

Solve the quadratic equation.
3x² - 8x - 8 = 0

• A    {0.38, -0.88} 
• B  {0.89, -8.9}
• C . {0.13, -0.63}
• D . {3.44, -0.77}

Solve by factoring: x² + 3x - 18 = 0

• x = -3 and x = 6
• x = 3 and x = -6
• x = -9 and x = 2
• x = 9 and x = -2

What are the roots / solutions of the quadratic equation 3x² = 300 ?

• x = 10

• x = 9

• x = + 9

• x = + 10

Solve using square roots.

• ±81
• ±9
• ±3
• No real solution

What is the formula of calculate the new C-term

What is one of the solutions to this equation?

(x - 3)² = 49

• 7

• -7

• -4

• 4

Solve by completing the square. Round.
x² -4x = 5

• 11 and -7
• 1 and 3
• 1.73 and -1.73
• 5 and -1

Solve by factoring: x² - 9x + 20 = 0

• x = -4 and x = -5

• x = 20 and x = -9

• x = 4 and x = 5

• x = -4 and x = 5

Factor and solve:

z² − 14z + 45 = 0

• z = 1, 45

• z = −1, 45

• z = −5, 9

• z = 5, 9