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Quadratic Functions, Equations and Inequalities - Solving Quadratic Equations Using the Quadratic Formula

Quadratic Functions, Equations and Inequalities - Solving Quadratic Equations Using the Quadratic Formula

Find roots of the equations using the quadratic formula. Leave your answers correct to 3 significant figures.

  1. \(8x^2-3x-2=0\)
  2. \(3x^2+10x+5=0\)
  3. \(-x^2+4x-2=0\)
  4. \(-4x^2+9x+2=0\)

Solution:

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Answer:(a) \(-0.347,\ 0.722\) (b) \(-2.72,\ -0.613\) (c) \(0.586,\ 3.41\) (d) \(-0.204,\ 2.45\) (3 s.f.).

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