9/29 Algebra 2 Bellringer

Solve the following equation by completing the square:
n² - 2n - 3 = 0

• {3, -1}
• {4, -4}
• {5, -3}
• {8, -7}

Tags

CCSS.HSA-REI.B.4B

Complete the square.
x² + 6x + ____

• x² + 6x + 9
• x² + 6x - 36
• x² + 6x + 36
• x² + 6x - 9

Tags

CCSS.HSA-REI.B.4B

Solve by completing the square:
k² − 12k + 23 = 0

• {6 + √13, 6 - √13}
• {-6 + √13, -6 - √13}
• {6 + √59, 6 - √59}
• {-6 + √59, -6 - √59}

Tags

CCSS.HSA-REI.B.4B

Multiply. (-2 + 7i)(-2 + 2i)

• -10 + 8i

• -10 - 18i

• 18 - 10i

• -18 - 10i

Find the difference.

• 7-13i

• 7-i

• 1-13i

• 1-i

Calculate(Divide, multiply by conjugate):

• 12/5 − 4/5i
• -8/10i − 4/5 
• -4/5 + 12/5i
• 12/5 + 4/5i

Tags

CCSS.HSA.APR.D.6

Solve by factoring: x² - 9x + 20 = 0

• x = -4 and x = -5
• x = 20 and x = -9
• x = 4 and x = 5
• x = -4 and x = 5

Tags

CCSS.HSA-REI.B.4B

Write a quadratic equation given the x intercepts and one other point.

The zeros of the function are (-3, 0) and (5, 0).

The point (4, -3) is also on the graph.

• y=4(x+3)(x-5)

• y=3/7(x-3)(x+5)

• y= -3(x-3)(x+5)

• y=3/7(x+3)(x-5)

Solve By Completing the Square:

 $x^2+6x+27=0$  

•  $3\pm\sqrt{18}$  

•  $3\pm i\sqrt{18}$  

•  $-3\pm i\sqrt{18}$  

•  $-3\pm\sqrt{18}$  

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

Use the square root property to solve the Quadratic Equation.

x² = -49

• ± 7

• -7

• ± 2401

• ± 7i