How do you simplify the square root $\pm \sqrt{0.64}$ $+-sqrt0.64$ ?

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How do you simplify the square root $\pm \sqrt{0.64}$ $+-sqrt0.64$ ?

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Answer 1 · 2016-10-25T10:48:57

$= \pm 0.8$ $=+-0.8$

Explanation:

$\pm \sqrt{0.64}$ $+-sqrt0.64$
split the number up into two numbers, one being a an even power of 10, so that the square roots can be found by inspection.

$= \pm \sqrt{64 \times 10^{- 2}}$ $=+-sqrt(64xx10^-2)$

$= \pm \sqrt{64} \times \sqrt{10^{- 2}}$ $=+-sqrt64xxsqrt(10^-2)$

$= \pm 8 \times 10^{- 1}$ $=+-8xx10^-1$

$= \pm 0.8$ $=+-0.8$

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How do you simplify the square root $\pm \sqrt{0.64}$ $+-sqrt0.64$ ?

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How do you simplify the square root $\pm \sqrt{0.64}$ $+-sqrt0.64$ ?