Function Operations Review

Given

f(x) = 3x² + 7x and

g(x) = 2x² - x - 8, find

(f + g)(x).

• 11x² - 8

• 5x⁴ + 6x² - 8

• 5x² + 6x - 8

• 5x² + 8x - 8

f(n)=2n+1
g(n)=3n
Find f(n)+g(n)

• 5n+1
• -5n+1
• -2n+1
• -6n-1

Tags

CCSS.HSF-BF.A.1B

f(x)=x²+1
g(x)=2x-5
Find f(x)-g(x)

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

Tags

CCSS.HSF-BF.A.1B

When f(x) = x²+9 and g(x) = x-9, find f(x)-g(x). 

• x²+x+9
• x²-x+9
• x²-x
• x²-x+18

Tags

CCSS.HSF-BF.A.1B

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

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

Tags

CCSS.HSF-BF.A.1B

f(x)=2x+4
g(x)=3x²-1
Find f(x)*g(x)

• 6x⁴+12x³-4x²-8x
• -6x³+12x²+2x-4
• 6x³+12x²-2x-4
• 5x²-18x+20

Tags

CCSS.HSF-BF.A.1B

Which expression is equivalent to f(x)*g(x) when

f(x)=x²-2x+1 and g(x)=x+1?

• x³-x²-x+1

• x³-2x+2

• x³+x²+x+1

• x³-3x²-3x+1

f(x)=x+3
g(x)=x-2
Find g(x)/f(x)

• (x+3)/(x-2)
• (x-2)/(x+3)
• -2/3
• 3/2

Tags

CCSS.HSF-BF.A.1B

When f(x) = 2x-8 and g(x) = x²+3 , find f(g(x)).

• x²+2x+3

• 2x² - 5

• 2x² + 3

• 2x² - 2

f(x)=x²-4x+8

h(x)=3x+3

h(f(x))

• 3x²-9

• 3x² - 12x + 24

• 3x²-4x+11

• 3x² - 12x + 27