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Step-by-step explanation:
f(x) = 2x² + 4x - 5
g(x) = 6x³ - 2x² + 3
(f-g)(x) = f(x) - g(x)
= (2x² + 4x - 5) - (6x³ - 2x² + 3)
= -6x³ + (2 + 2)x² + 4x + (-5 - 3)
= -6x³ + 4x² + 4x - 8
Option → B