Polynomial function operations

f(x) = 3x² + 2x - 4 and g(x) = 5x² + 3x - 8, find f(x) + g(x)

• 2x² -x + 4
• 8x² + 5x - 12
• 8x⁴ + 5x² - 12
• 8x² + 5x - 4

Tags

CCSS.HSA.APR.A.1

f(x) = 3x² + 2x - 4 and g(x) = 5x² + 3x - 8, find f(x) - g(x)

• -2x² -x + 4
• -2x² + 5x - 12
• -2x² - x - 4
• 2x² -x + 4

Given f(x) = 3x + 4 and g(x) = 6x - 5, find f(x) * g(x)

• 18x² -20
• 18x² + 39x - 20
• 18x² - 9x - 20
• 18x² + 9x - 20

Given f(x) = 3x + 4 and g(x) = 2x -5, find (f + g)(3)

• 18x -3
• 14
• 16
• 20

Given f(x) = 6x - 5 and g(x) = 3x + 2, find (g-f)(x)

• 3x -7
• 3x - 3
• -3x -7
• -3x+7

Tags

CCSS.HSF-BF.A.1B