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If x = 3 and y = -1, evaluate 2(x\(^2\) - y\(^3\))

Mathematics
WAEC 2020

If x = 3 and y = -1, evaluate 2(x\(^2\) - y\(^3\))

  • A. 24
  • B. 22
  • C. 20
  • D. 16
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Correct Answer: Option C
Explanation

2(\(x^2 - y^3\))

= 2(\(3^2 - (-1)^3\))

= 2(9 - (-1))

= 2 x 10 = 20

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