which of the following is not quadratic expression?

  • A \(y = 2x^2 - 5x\)
  • B \(y=x(x-5)\)
  • C \(y = x^2 - 5\)
  • D y = 5(x-1)
waec 2001mathematics

The correct answer is D. y = 5(x-1)

A quadratic equation is an equation of the second order. The highest power in the equation is 2.

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