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22-10-2018
Mathematics

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[tex] \sqrt{ - 25} [/tex]

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22-10-2018

[tex]\sqrt{-25}=\sqrt{(25)(-1)}=\sqrt{25}\cdot\sqrt{-1}=5\cdot i=5i\\\\\text{used}\\\\\sqrt{ab}=\sqrt{a}\cdot\sqrt{b}\\\\i=\sqrt{-1}[/tex]

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