PC 12 ch 10.1 &10.2 Sum and difference of functions

 Given f(x)= x² + 25 and g(x)= x - 5, find     (f+g)(x). 

• x² + x - 20
• x² + x + 20
• -x² + x - 20
• x² - x - 20

Tags

CCSS.HSF-BF.A.1B

g(x) = 2x - 5
h(x) = 4x + 5
Find (g - h)(3)

• 18
• 16
• -16
• 28

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

If f(x) = -4x - 5 and
g(x) = 3 - x,
what is g(-4) + f(1)?

• 7
• -2
• -9
• -10

Tags

CCSS.HSF.IF.A.2

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

Tags

CCSS.HSF-BF.A.1C

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

Given f(x) = 3x² - 2x + 1 and           g(x) = x - 4, find (f*g)(x). 

• 3x³ - 10x² - 7x - 4
• 3x³ - 14x² + 9x - 4
• 3x² - x - 3
• 3x³ + 14x² - 9x - 4

Tags

CCSS.HSF-BF.A.1B

f(x)= x+3

g(x)= x-2

Find (g(x) / f(x))

Be careful!!

• (x + 3)/(x - 2)

• (x - 2)/(x + 3)

• -2/3

• 3/2

Tags

CCSS.HSF-BF.A.1B

f(x)= x² - 1

g(x)= x - 1

Find (f(x)/g(x))

Then simplify using x = 10

• 9

• 11

• 90

• 110

Tags

CCSS.HSF-BF.A.1B

When f(x) = x² - 9

and g(x) = x + 3 ,

find f(x) / g(x).

• x - 3

• x + 3

• x - 12

• x - 6

Tags

CCSS.HSF-BF.A.1B