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

Solve
a² + 2a - 24 = 0

• a = -6, 4
• a = 6, -4
• a = 12, -2
• a = 8, -3

Tags

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

Solve by taking square roots:
4m² - 100 = 0

• m=25, -25
• m=96
• m=5, -5
• m=-96

Tags

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

Solve:           (x-4)²-18 = 0

• x = 4 + 3√2
• x = 8.24, -.24
• x = 4 ± 3√2
• x = 4 ± √18

Tags

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

Solve for 0≤x≤2π

2sin²x - sinx = 0

• 0, π, 2π

• π/2, 3π/2

• π/6, 5π/6

• π/3, 2π/3

Tags

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

2 For the function below, is the discriminant positive, negative, or zero?

y = x² + 4x + 4

• Positive

• Negative

• Zero

Tags

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

Solve using the Quadratic Formula:

15x² + 22x = −8

• x = −2/3, 4/5

• x = 2/3, −4/5

• x = 2/3, 4/5

• x = −2/3, −4/5

Tags

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

Identify the values of A, B, and C

11r² + 6r = 6

• A=11, B=-6, C=-6

• A=11, B=6, C=6

• A=11, B=6, C=-6

• A=1, B=6, C=-6

Tags

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

Solve by taking the square root:

(x + 1) ² = 25

• ± 5

• 4 or -6

• -4 or 6

• ± 4

Tags

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

Find the function's maximum and minimum points

• no maximum

  minimum (-4,-1)

• no minimum

  maximum (-3, 1)

• no maximum

  minimum (-1,-4)

• maximum (-3,1)

  minimum (0,-3)

Tags

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

Solve by the Quadratic Formula:

 $9u^2-11u+7=0$  

•  $\frac{-11\pm\sqrt{131}}{18}$  

•  $\frac{11\pm\sqrt{131}}{18}$  

•  $\frac{11\pm\sqrt{131}}{-18}$  

•  $\frac{11\pm i\sqrt{373}}{18}$  

Tags

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