Quadratics and Complex Numbers

A diver is standing on a platform above the pool. He jumps form the platform with an initial upward velocity of 8 ft/s. Use the formula: h(t) = −16 t² + 8t + 24

How high is the platform?

• .25 ft

• 24 ft

• 25 ft

• 8 ft

Find the zeros of this quadratic.

• b=4/5, b=3

• b=4, b=-3

• b=1/5, b=3

• b=4/5, b=-3

Solve:
x² - 49 = 0

• x = -7, x = 7

• x = -7

• x = 7

• x = -7, x = 1

Solve using the quadratic formula. Leave your answer in exact form.

Simplify:
i⁷

• i

• -i

• 1

• -1

• A
• B
• C
• D

• A
• B
• C
• D

• A
• B
• C
• D

• A. 8i
• B. -8i
• C. -8
• D. 8

• A. -8i

• B. -9i

• C. i + 10

• D. -9