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Equations, SM-Bank 061

Solve, giving all solutions.

  1. \(x^2=25\)  (2 marks)

    --- 3 WORK AREA LINES (style=lined) ---

  2. \(x^2=289\)  (2 marks)

    --- 3 WORK AREA LINES (style=lined) ---

Show Answers Only

a.    \(x=\pm 5\)

b.    \(x=\pm 17\)

Show Worked Solution
a.    \(x^2\) \(=25\)
  \(\sqrt{x^2}\) \(=\pm\sqrt{25}\)
  \(x\) \(=\pm 5\)

 

b.    \(x^2\) \(=289\)
  \(\sqrt{x^2}\) \(=\pm\sqrt{289}\)
  \(x\) \(=\pm 17\)

Filed Under: Equations Tagged With: num-title-ct-core, smc-4215-35-Quadratics

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