Completing the Square & Using the Quadratic Formula/Discriminant

Find the value of c that makes this trinomial a perfect square. ( x^2 - 9x + c )

• -81/4

• -9/2

• 9/2

• 81/4

Tags

CCSS.MATH.CONTENT.HSA.REI.B.4

CCSS.MATH.CONTENT.HSF.IF.C.8.a

Find the value of c that makes this trinomial a perfect square. ( x^2 + 40x + c )

• -400

• -20

• 20

• 400

Tags

CCSS.MATH.CONTENT.HSA.REI.B.4

CCSS.MATH.CONTENT.HSF.IF.C.8.a

Solve this equation by completing the square. Round to the nearest tenth if necessary

3x^2 + 8x + 9 = 0

• 6.6, 1.4

• 6.6, -1.4

• -6.6, 1.4

• -6.6, -1.4

Tags

CCSS.MATH.CONTENT.HSA.REI.B.4

CCSS.MATH.CONTENT.HSF.IF.C.8.a

Solve this equation by using the Quadratic Formula. Round to the nearest tenth if necessary

x^2 - 6x + 7 = 0

• -1.6, -4.4

• -1.6, 4.4

• 1.6, 4.4

• 0

Tags

CCSS.MATH.CONTENT.HSA.REI.B.4

Solve this equation by using the Quadratic Formula.

4x^2 + 7x = 15

• 3, -1 1/4

• -3, 1 1/4

• 3, 1 1/4

• 0

Tags

CCSS.MATH.CONTENT.HSA.REI.B.4

Solve this equation by using the Quadratic Formula. Round to the nearest tenth if necessary.

4.5x^2 + 4x - 1.5 = 0

• 1.2, 0.3

• 1.2, -0.3

• -1.2, 0.3

• 0

Tags

CCSS.MATH.CONTENT.HSA.REI.B.4

Solve this equation by using the Quadratic Formula. Round to the nearest tenth if necessary.

3x^2 - 1 = -8x

• -2.8, -0.1

• 2.8, -0.1

• -2.8, 0.1

• 0

Tags

CCSS.MATH.CONTENT.HSA.REI.B.4

State the value of the discriminant for this equation. Then determine the number of real solutions of the equation

3/4 x^2 - 3x = -4

• -3; no real solutions

• -3; 1 real solution

• 0; 1 real solution

• 3; 2 real solutions

Tags

CCSS.MATH.CONTENT.HSA.REI.B.4

State the value of the discriminant for this equation. Then determine the number of real solutions of the equation

3x^2 - 2x = 3.5

• -46; no real solutions

• 0; 1 real solution

• 46; 1 real solution

• 46; 2 real solutions

Tags

CCSS.MATH.CONTENT.HSA.REI.B.4

State the value of the discriminant for this equation. Then determine the number of real solutions of the equation

4x^2 + 9 = 12x

• 0; no real solutions

• 0; 1 real solution

• 0; 2 real solutions

• 1; 2 real solutions

Tags

CCSS.MATH.CONTENT.HSA.REI.B.4