4/6 Mixed Review #6

 $\sqrt{40}$  

•  $4\sqrt{10}$  

•  $10\sqrt{4}$  

•  $2\sqrt{10}$  

•  $10\sqrt{2}$  

Simplify the following radical: 2√24

• 4√6
• 2√6
• 24√2
• 4√4

What mathematical process did they use?

• Quadratic Formula
• Completing the Square
• Factoring
• Differentiation

Solve using inverse operations. x² + 4 = 68

• x=8 or x= -8

• x= √8 or x=-√8

• x=8

• x=64 or x=-64

What is (x - 4)(x - 6) equivalent too?

• x^2 -10x + 24

• x^2 - 10x - 24

• x^2 +10x + 24

• x^2 + 10x - 24

Which choice is equivalent to (x + 5)^2 ?

• x^2 + 25

• x^2 + 10x + 25

• x^2 + 10 x + 10

• x^2 + 10

Simplify the expression.

(4n⁴ - 8n + 4) - (4n⁴ + 8n² + 1)

• -8n² - 8n + 3

• -7n² - 8n + 3

• -6n² - 8n + 3

• -7n² - 4n + 3

A rectangle has width (2x + 3) and length (2x - 4).  What is the perimeter of the rectangle?

• 4x - 12
• 4x - 1
• 8x - 2
• 4x² - 2x - 12

What is the solution to the system of equations graphed?

• (1, -1)

• (-1, 1)

• (0, -2)

• (0, 1)

Solve the system of equations.

(You and use the Elimination or Substitution methods...think about what would be easier for this system)

y = -6x + 5

-2x + y = 5

• (-3, -6)

• (-6, 3)

• (0, 5)

• (-3, 5)