Solving Quadratics Practice

Solve
a² + 2a - 24 = 0

• a = -6, 4
• a = 6, -4
• a = 12, -2
• a = 8, -3

Solve
x² + 9x + 20 = 0

• x = -2, x = -10
• x = -3, x = -4
• x = -4, x = -5
• x = -4, x = -6

Solve:   $5x^2-45=0$  

•  $x=3$  

•  $x=-3$  

•  $x=3$  and  $x=-3$  

•  $x=0$  ,  $x=3$  , and  $x=-3$  

Solve:
x² - 49 = 0

• x = -7, x = 7
• x = -7
• x = 7
• x = -7, x = 1

Solve by the Quadratic Formula:

 $9u^2-11u+7=0$  

•  $\frac{-11\pm\sqrt{131}}{18}$  

•  $\frac{11\pm\sqrt{131}}{18}$  

•  $\frac{11\pm\sqrt{131}}{-18}$  

•  $\frac{11\pm i\sqrt{373}}{18}$  

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

find x for

2x²-8x-24=0 usingthe quadratic formula

• x= 6, -2

• x= 2, -6

• x= 4, 2

• x= 2, 6

Solve by taking the square root:

4x² = 100

• ±10

• ±25

• ±5

• 5

Solve the following polynomial:

x² + 4x - 40 = -8

• -10 & -4

• -4 & 10

• -8 & 4

• 8 & -4

Solve the following polynomial:

2x² + 7x - 15 = 0

• -1.5 or 5

• No Solution

• -5 or 1.5

• 0.7 or 5