If f(x) = 2x³ - 3x² + x - 5, find f(2).
A1CORRECT
B3
C-1
D5
GCEFurther MathematicsPolynomials and Partial Fractions2022
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Why the answer is A, and why the others tempt you.
Substituting x = 2: f(2) = 2(8) - 3(4) + 2 - 5 = 16 - 12 + 2 - 5 = 1. The correct answer is 1. Common errors include sign mistakes or incorrect order of operations.
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