Factoring
Completing the Square
Taking Square Roots
Quadratic Formula
Projectile Motion
100

x2 - 1 = 0

{-1, 1}

100

Solve the following quadratic equation by completing the square: x2 + 6x = -8

{-4, -2}

100

Solve the following quadratic equation  x2  = 16

{-4, 4}

100

What is the quadratic formula?


x =( -b pm sqrt(b^2 - 4ac)) /(2a)

100

A ball is launched from a 269.28-foot tall platform. The function for the ball's height h at time t seconds after launch is h(t)=−16t2+131.2t+269.28, where h is in feet. When does the object strike the ground?

9.9 seconds

200

Solve the following quadratic equation by factoring:

9x2 - 81x = 0

{0, 9}

200

Solve the following quadratic equation by completing the square: x2 - 6x = -5

{1, 5}

200

Solve the following quadratic equation : x2  = -16

 {No solution}

200

Solve the following quadratic equation by using the quadratic formula: x2 + 6x + 5 = 0

x = -1, x = -5

200

What year was the quadratic formula invented (the one we use today)

1594

300

Solve the following quadratic equation by factoring.

 n2 - 7n + 6=0

{6, 1}

300

Solve the following quadratic equation by completing the square: x2 - 2x = 24

{-4, 6}

300

Solve the following quadratic equation by completing the square: x2 - 2 = 23

{-5, 5}

300

Solve the following quadratic equation by using the quadratic formula. x2 - 9x + 6 = 0

(9 pm sqrt(57))/2

300

A ball is launched from a 57.477-meter tall platform. The function for the ball's height h at time t seconds after launch is h(t)=−4.9t2+25.48t+57.477, where h is in meters. When does the object strike the ground?

6.9 seconds

400

Solve the following quadratic equation by factoring. 

b2 - 8b = 20

{10, -2}

400

Solve the following quadratic equation by completing the square: x2 + 10x +5 = 0

-5 +- 2(sqrt5)

400

Solve the following quadratic equation. x2 + 5 = 0

No Solutions

400

Solve the following quadratic equation by using the quadratic formula: 2x2 + 9x + 4 = 0

{-1/2, -4}

400

What is the standard form of a quadratic equation?

ax2 + bx + c = 0

500

Solve the following quadratic equation by factoring. 

9x+ 5x - 24= 8x2 + -5x

{-12, 2}

500

Solve the following quadratic equation by completing the square: 

x2 - 8x + 13 = 0

4 +-sqrt 3

500

Solve the following quadratic equation: 

2x2 -5 = 13

x = 3, x = -3

500

Solve the following quadratic equation by using the quadratic formula: 

4x2 - 17x =-12 

x = (17 pm sqrt(97))/8

500

A ball is launched from a 128-foot tall platform. The function for the ball's height h at time t seconds after launch is h(t)=−16t2+32t+128, where hh is in feet. When does the object strike the ground?

4 seconds

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