Question

Given that f(x) [equation] and g(x) [equation] find: (look at image please help)

Answer 1

f(x) = x² - 10x, g(x) = x + 10

a) (f + g)(-3) = (-3)² - 10(-3) + (-3) + 10

= 9 + 30 - 3 + 10 = 46

b) (f - g)(-3) = (-3)² - 10(-3) - (-3 + 10)

= 9 + 30 - 7 = 32

c) (fg)(-3) = ((-3)² - 10(-3))(-3 + 10)

= (9 + 30)(7) = 39(7) = 273

d) (f/g)(-3) = ((-3)² - 10(-3))/(-3 + 10)

= (9 + 30)/7 = 39/7 = 5 4/7