Algebra 2 Homework 12/8

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

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}

Solve by completing the square.
y² + 10y = -9

• 1 and -12
• -1 and -9
• 1 and -9
• 1 and -1

Solve by completing the square.
x² +12x = 5

• X = 6 + √41 or  6 − √41
• X= 35 or 47
• X = −6 + √41 or  −6 − √41
• X = √35 or √47

Complete the square for
x² + 12x + ____

• x² + 12x + 144
• x² + 12x + 36
• x² + 12x - 36
• x² + +12x - 144

Complete the square.
x² + 6x + ____

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

Complete the square.
x² + 14x + ____

• x² + 14x - 196
• x² + 14x + 49
• x² + 14x - 49
• x² + 14x + 196

3x² + 8x + 5

• (x - 1) (3x - 5)

• (3x - 1) (x - 5)

• (x + 1) (3x + 5)

• (3x + 1) (x + 5)

6x² - x - 1

• (3x - 1) (2x + 1)

• (3x + 1) (2x - 1)

• (6x + 1) (x - 1)

• (6x - 1) (x + 1)

7x² - 16x + 4

• (x + 2) (7x - 2)

• (x + 2) (7x + 2)

• (x - 2) (7x + 2)

• (x - 2) (7x - 2)