Functions and Unit Review

if f(x) = 3x² -9x -20, find the value of f(5) using synthetic division.

• 0
• 10
• 15
• -7

2x³ - 5x² + 3x + 7 ÷ x - 2

• 2x³ - x² + x + 9
• 2x² - x + 1
• 2x² - x + 1 + 9/x-2
• 2x² - 9x - 15 - 23/x-2

Find all the zeros, given that f(-3) = 0
f(x) = 2x³+5x²-6x-9

• -1,-3,-3
• -1,-3,3/2
• 3,3,3
• -3,2/3,-1

Solve the following equation:
x⁴ + x² - 90 = 0

• 3, -3, ±√10
• 3, -3
• ±√10
• 3

Solve

x⁴ + 7x² - 30=0

Solve

16a⁴ - 9 = 0

Solve: x⁴+6x³+9x²+54x=0

• 0, 6, 3, -3

• 0, -6, 3, -3

• 0, -6, 3i, -3i

• 0, 6, 3i, -3i

• 39
• -27
• -23
• -19