Respostas

2014-03-20T19:28:15-03:00
F(x) = -x² -2x + 9

f(0) = -0² - 2.0 + 9
f(0) = 0 - 0 + 9
f(0) = 9

f(-1) = -(-1)² - 2.(-1) + 9
f(-1) = 1² - (-2) + 9
f(-1) = 1 + 2 + 9
f(-1) = 12
1 5 1