# 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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