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

  • A 24
  • B 22
  • C 20
  • D 16
waec 2020mathematics

The correct answer is D. 16

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

= 2(x + y)(x - y)

= 2(3 + (-1))(3 - (-1))

= 2(2)(4) = 16

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