Question

f (x) x2+6x+18 usando (0,1,-1,2,-2)

Answer 1

f(x) = x² + 6x + 18

a)
x = 0

f (0) = 0² + 6.0 + 18
f(0) = 0 + 0 + 18
f(0) = 18
--------------------------------------
b)

x = 1

f (1) = 1² + 6.1 + 18
f(1) = 1 + 6 + 18
f(1) = 7 + 18
f(1) = 25
--------------------------------
c)

x = - 1

f (-1) = (-1)² + 6.(-1) + 18
f (-1) = 1 - 6 + 18
f (-1) = - 5 +18
f (-1) = 13
----------------------------------------
d)

x = 2

f (2) = 2² + 6.2 + 18
f (2) = 4 + 12 + 18
f (2) = 16 + 18
f (2) = 34
---------------------------------------
e)

x = - 2

f (-2) = (-2)² + 6.(-2) + 18
f (-2) = 4 - 12 + 18
f (-2) = 4 + 18 - 12
f (-2) = 22 - 12
f(-2) = 10