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Find the real solutions by completing the square: z^2 + 12z + 21 = 0
(-3/2), (-5/4)
-8, 4
x^2 - 2x - 15 = 0
-6 ± √(15)
An equation that has degree 2
(8, 20)
-5, -4
90 seconds
A rocket is shot into the air with an initial velocity of 800 m/sec. The equation h = -16t2 + 1440t models the height of the ball. How long does it take for the rocket to hit the ground (h=0)?
(-3/2), (-5/4)
-8, 4
x^2 - 2x - 15 = 0
-6 ± √(15)
An equation that has degree 2
(8, 20)
-5, -4
90 seconds
Use the quadratic formula to solve the equation: 8y^2 + 22y + 15 = 0
(-3/2), (-5/4)
-8, 4
x^2 - 2x - 15 = 0
-6 ± √(15)
An equation that has degree 2
(8, 20)
-5, -4
90 seconds
Solve x^2 + 4x – 32 = 0
(-3/2), (-5/4)
-8, 4
x^2 - 2x - 15 = 0
-6 ± √(15)
An equation that has degree 2
(8, 20)
-5, -4
90 seconds
Write a quadratic equation in the form ax^2 + bx + c = 0 that has the given numbers as solutions: (5, -3)
(-3/2), (-5/4)
-8, 4
x^2 - 2x - 15 = 0
-6 ± √(15)
An equation that has degree 2
(8, 20)
-5, -4
90 seconds
What is a quadratic equation?
(-3/2), (-5/4)
-8, 4
x^2 - 2x - 15 = 0
-6 ± √(15)
An equation that has degree 2
(8, 20)
-5, -4
90 seconds
Use the square root property to find all real solutions to the equation: (x - 14)^2 = 36
(-3/2), (-5/4)
-8, 4
x^2 - 2x - 15 = 0
-6 ± √(15)
An equation that has degree 2
(8, 20)
-5, -4
90 seconds
Solve the equation by factoring: x^2 + 9x + 20 = 0
(-3/2), (-5/4)
-8, 4
x^2 - 2x - 15 = 0
-6 ± √(15)
An equation that has degree 2
(8, 20)
-5, -4
90 seconds
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