Solving Quadratics by Completing the Square

Solve the following quadratics equation by completing the square...

x² - 10x - 5 = 0

• x = -5 ± √30

• x = 5 ± √30

• x = 30 ± √5

• x = -30 ± √5

Tags

CCSS.HSA-REI.B.4B

• {-2, -5}

• {2, -4}

• {4, -4}

• {-2, 4}

Tags

CCSS.HSA-REI.B.4B

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

Solve by completing the square. 
 x² − 10x - 11= 0

• x = −1 and 11
• x = 1 and −11
• x = −10 and 11
• x = −5 and 25

Tags

CCSS.HSA-REI.B.4B

What do you do to the "b" value to correctly complete the square?

• square it
• divide it by 2 and square the result
• divide it by 2 and take the square root of the result
• divide it by 2 only

Tags

CCSS.HSA-REI.B.4B

• x = 3 and -4

• x = -3 and 4

• x = 3 and 4

• x = -3 and -4

Tags

CCSS.HSA-REI.B.4B

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

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

Tags

CCSS.HSA-REI.B.4B

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7