formula about square root!?

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Guest Dec 9, 2014

+33661

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Best Answer

Yes, they are true. Examples, using the inbuilt calculator here:

$${\sqrt{{{\mathtt{5}}}^{{\mathtt{2}}}}} = {\mathtt{5}}$$

$${\sqrt{{\left(-{\mathtt{5}}\right)}^{{\mathtt{2}}}}} = {\mathtt{5}}$$

$${{\sqrt{{\mathtt{5}}}}}^{\,{\mathtt{2}}} = {\mathtt{5}}$$

$${{\sqrt{-{\mathtt{5}}}}}^{\,{\mathtt{2}}} = -{\mathtt{5}}$$

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Alan Dec 9, 2014

Alan · Answer 1 · 2014-12-09T12:42:05

Yes, they are true. Examples, using the inbuilt calculator here:

$${\sqrt{{{\mathtt{5}}}^{{\mathtt{2}}}}} = {\mathtt{5}}$$

$${\sqrt{{\left(-{\mathtt{5}}\right)}^{{\mathtt{2}}}}} = {\mathtt{5}}$$

$${{\sqrt{{\mathtt{5}}}}}^{\,{\mathtt{2}}} = {\mathtt{5}}$$

$${{\sqrt{-{\mathtt{5}}}}}^{\,{\mathtt{2}}} = -{\mathtt{5}}$$

.

Guest · Answer 2 · 2014-12-09T12:47:24

Thank you，alan!Just making sure that are true.