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What type of equation is x2 - 5x = -3?

  1. Parabola

  2. Exponential

  3. Linear

  4. Quadratic

The correct answer is: Quadratic

This equation is a quadratic equation, since it has a squared term (x2). The other options are incorrect because - A parabola is a graph, not an equation. - An exponential equation involves the variable being in an exponent, e.g. 2x = 36. - A linear equation has the variable raised to the first power, e.g. 2x - 3 = 15. Therefore, D is the most appropriate option for this equation.