Quadratic Functions, Equations and Inequalities

Quadratic Functions, Equations and Inequalities

Secondary 1

Solve by completing the square. Give exact answers.

  1. \(x^2-4x-1=0. \)

  2. \( 2x^2+4x-3=0. \)

Solution:

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Answer:(a) \(x=2\pm\sqrt5\) (b) \(x=-1\pm\frac{\sqrt{10}}2\)

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