CCSS.Math.Content.HSA.REI.B.4

When do you use the plus or minus symbol?
±

• After taking the square root of both sides
• After adding the square to both sides
• After taking half of b
• After setting the equation equal to zero

Tags

CCSS.Math.Content.HSA.REI.B.4

In the equation x²+4=0, match each leading coefficient with its correct letter. 

• a=0 b=4 c=0
• a=1 b=4 c=0
• a=1 b=0 c=4

Tags

CCSS.Math.Content.HSA.REI.B.4

Solve
8n² + 10n - 3 = 0

• n = ^-1/₈, ¹⁰/₃
• n = ⁴/₅, - 2
• n = ¹/₄, ^-3/₂
• n = 2, -12

Tags

CCSS.Math.Content.HSA.REI.B.4

What is the vertex of the quadratic function:
y = x² - 6x + 11?

• (3,2)
• (-3,-2)
• (-3,2)
• (3,-2)

Tags

CCSS.Math.Content.HSA.REI.B.4

Factor:

x² + 11x + 24

• (x + 6)(x + 4)

• (x + 12)(x + 2)

• (x - 8)(x - 3)

• (x + 8)(x + 3)

Tags

CCSS.Math.Content.HSA.REI.B.4

Is (x +1)² = x² + 2x + 1 is a quadratic equation?

• YES
• NO

Tags

CCSS.Math.Content.HSA.REI.B.4

 $S=\frac{1}{2}at^2$  
Solve for  $t^2$  

•  $t^2=\frac{2S}{a}$  

•  $t^2=\frac{1}{2}S-a$  

•  $t^2=2S-a$  

•  $t^2=\frac{a}{2S}$  

Tags

CCSS.Math.Content.HSA.REI.B.4

Solve [0,2π] 4cos²x - 7cosx - 2 = 0

• 1.82, 4.46

• 1.23, 3.87

• 2.07, 5.73

• no solution

Tags

CCSS.Math.Content.HSA.REI.B.4

Solve by finding square roots and simplify completely:
 $2x^2=20$ 

•  $x=\pm10$  

•  $x=\sqrt{10}$  

•  $x=\pm\sqrt{10}$  

• No real solutions

Tags

CCSS.Math.Content.HSA.REI.B.4

Solve by method of your choice.

x² + 10x = -9

• 1 and -12

• -1 and -9

• 1 and -9

• 1 and -1

Tags

CCSS.Math.Content.HSA.REI.B.4