Solving Quadratics: Question Preview (ID: 24764)


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Solve x^2 + 4x – 32 = 0
a) -8, -4
b) 8, 4
c) -8, 4
d) 8, -4

Solve x^2 + 6x - 15 = -8 by completing the square.
a) -7, -1
b) 7, 1
c) 7, -1
d) -7, 1

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)?
a) 16 seconds
b) 90 seconds
c) 800 seconds
d) 1440 seconds

What is a quadratic equation?
a) An equation that has four terms
b) An equation that has degree 4
c) An equation that has two terms
d) An equation that has degree 2

Write a quadratic equation in the form ax^2 + bx + c = 0 that has the given numbers as solutions: (5, -3)
a) x^2 - 2x - 15 = 0
b) x^2 - 15x - 2 = 0
c) x^2 + 2x - 15 = 0
d) x^2 - 15x + 2 = 0

Solve the equation by factoring: x^2 + 9x + 20 = 0
a) 4, 5
b) -5, -4
c) 9, 20
d) -4, 5

Use the square root property to find all real solutions to the equation: (x - 14)^2 = 36
a) (20)
b) (8, 20)
c) (-8, -20)
d) (-22)

Find the real solutions by completing the square: z^2 + 12z + 21 = 0
a) -12 ±√( 15)
b) -6 ± √(15)
c) 6 ± √(15)
d) 6 ± √(15)

Use the quadratic formula to solve the equation: 8y^2 + 22y + 15 = 0
a) (- 3/8), (- 1/3)
b) (3/2), (-5/4)
c) (3/2), (5/4)
d) (-3/2), (-5/4)

Solve the equation by any method: 6x^2 + 21x - 12 = 0
a) (1/2), -4
b) (-1/2), 4
c) 3, -4
d) -2, 4

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