x=-3,y=5
What is the value of :

x³ + y² - xy + (-3x)

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• A 12
• B 20
• C 22
• D 14

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Answer: C. 22

x³ = (-3)³ = -27; y² = 25; -xy = -(-3)(5) = 15; -3x = -3 × (-3) = 9.
-27 + 25 + 15 + 9 = 22.

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