Exam Review - Solving Quadratic Equations

Solve using square roots.

• ±81
• ±9
• ±3
• No real solution

Tags

CCSS.HSA.REI.B.4

CCSS.HSA.REI.A.2

Solve by taking square roots:

5m² + 1 = 6

• m = 1

• m = 1 or -1

• m = √7

• m = 7/5 m = -7/5

Tags

CCSS.HSA.REI.B.4

Tags

CCSS.HSA.REI.B.4

(x + 3)² = 36

• x = √36
• x = √39
• x = -9 and x = 3
• x = 9 and x = -3

Tags

CCSS.HSA.REI.B.4

CCSS.HSA.APR.B.3

CCSS.HSA.REI.A.2

(x - 7)² = 5

• x = 7-√5
• x = 7+√5
• x = √5
• x = 7±√5

Tags

CCSS.HSA.REI.B.4

What is the first step to solving THIS equation by completing the square?
a² + 10a + 21 = 0

• Set the equation equal to zero
• Divide 10 by 2 and add the result to both sides
• Add a² and 10a together
• Subtract the 21

Tags

CCSS.HSA.REI.B.4

Complete the square for
x² + 12x + ____

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

Complete the Square
x² + 6x = 5

• (x + 3)² = 5
• (x + 6)² = 9
• (x + 3)² = 14
• (x + 6)² = 14

Tags

CCSS.HSA.REI.B.4

CCSS.HSA.SSE.A.2

CCSS.HSA.SSE.B.3

When factoring
x² - 4x + 4 = 20,
what goes in the blank?
(x - __ )² = 20

• 4
• 2
• 8
• 20

Tags

CCSS.HSA.REI.B.4

CCSS.HSA.APR.B.3

CCSS.HSA.SSE.A.2

CCSS.HSA.APR.B.2

CCSS.HSA.CED.A.1

• {-220, 250}

• {-250, 220}

Tags

CCSS.HSA.REI.B.4