Respostas

2013-03-24T15:53:24-03:00

a) f(0) = (0)² - 7.(0) - 9 = -9

b) f( -3) = (-3)² - 7.(-3) - 9 = 9 + 21 - 9 = 21

c) f(5) = (5)² - 7(5)-9 = 25 -35 -9 = -19