6.1-6.3 Review

Complete the square for

x² + 12x + ____

(find the missing number in the blank)

• x² + 12x + 144

• x² + 12x + 36

• x² + 12x - 36

• x² + +12x - 144

Tags

CCSS.HSA-REI.B.4B

Factor the perfect square trinomial:
x² + 16x + 64

• (x+8)²
• (x-8)²
• (x-4)²
• (x+4)²

Tags

CCSS.HSA.APR.C.4

Identify the vertex and whether the graph opens up or down.

• (5, 2); opens up
• (5, 2); opens down
• (-5, 2); opens up
• (-5, 2); opens down

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

Tags

CCSS.HSA-REI.B.4B

(x - 2) ² = 49

• 9  or  -5
• ± 9
• ± 5
• ± 7

Tags

CCSS.HSA-REI.B.4B

Solve by taking square roots:

k² - 6 = -50

• k = ±4i√11

• k = ±4√11

• k = ±2i√11

• k = ±2√11

Tags

CCSS.HSA-REI.B.4B

Simplify: √80

• 16√5

• 2√20

• 4√5

• 8√5

Simplify:

• 2

• 4√3

• 2√3

• 4

Solve
3x² - 5 = -446

• ±√-147
• 7i√3
• ±7i√3
• -7√3

Tags

CCSS.8.EE.A.2

Simplify
(-6 - 2i)²

• 32
• 36-4i
• 36+24i
• 32+24i

Tags

CCSS.HSN.CN.C.8