To find f(-6), we need to substitute -6 for x in the expression for f(x):
f(x) = 2x^2 + 5x - x/3
f(-6) = 2(-6)^2 + 5(-6) - (-6)/3
f(-6) = 2(36) - 30 + 2
f(-6) = 72 - 30 + 2
f(-6) = 44
Therefore, f(-6) = 44.
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