Solving by Completing the Square and Using the Quadratic Formula

Solve 3y² + 2 = 8y. Approximate the solutions to the nearest hundredth.

• 0.43, 2.87

• 0.28, 2.39

• -0.64, 1.32

• 0.56, 4.77

Find the value of b that makes x² + bx + 36 a perfect square.

• 324

• -12, 12

• 6

• 12

Find the value of c that makes x² + 16x + c a perfect square.

• -64

• 64

• 8

• 16

Solve 0.25x² – 7x – 15 = 0

• {4, 30}

• {3, 15}

• {–5, 3}

• {–2, 30}

Solve the following quadratics equation by completing the square (a)  

• x = -2 ± √3

• x = -3 ± √2

• x = 2 ± √3

• x = 2 ± √2

Solve by completing the square. Write the answer as #+-square root.

x^2+4x-16=0

Mathematical Equivalence

ON

Solve by completing the square. Write the answer as #+-square root.

3x^2+36x-15=0

Mathematical Equivalence

ON