Quadratic Functions, Equations and Inequalities

Quadratic Functions, Equations and Inequalities

Secondary 1

Solve each equation over the real numbers.

  1. \((2x-1)^2=20. \)

    Give exact answers.

  2. \( (x+4)^2=-9. \)

    Explain your conclusion.

Solution:

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Answer:(a) \(x=\frac12\pm\sqrt5\). (b) No real solutions.

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