Operations with Functions

f(n)=x²+1
g(n)=2x-5
Find f(n)-g(n)

• x²-2x+6
• -x²+2x+4
• -x²-2x-6
• x²-2x-4

Given
f(x) = 3x² + 7x and g(x) = 2x² - x - 1, find (f + g)(x).

• 11x² - 1
• 5x⁴ + 6x² - 1
• 5x² + 6x - 1
• 5x² + 8x - 1

f(x) = 4x + 1 and g(x) = 4x - 3
Find f(x) * g(x)

• 16x² + 8x - 3
• 16x² - 8x + 3
• 16x² - 8x - 3
• 16x² - 16x - 3

• -15

• 15

• -12

• -21

• -10

• -12

• -16

• 6

Given f(x) = 4^x - 7 and g(x) = 2x² - 5x + 12

Find (f - g)(x).

• 4^x - 2x² + 5x -19

• 4^x + 2x² - 5x + 5

• 2x² - x - 19

• 4^x - 2x² -5x + 5

• A

• B

• C

• D