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McGraw Hill Glencoe Algebra 1, 2012

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McGraw Hill Glencoe Algebra 1, 2012 View details

2. Real Numbers

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Exercise 25 Page p10

Look for perfect square factors inside the square root.

± 6

To simplify a square root, we need to find perfect square factors inside the radicand.

±sqrt(36)

SplitIntoFactors

Split into factors

±sqrt(6* 6)

ProdToPowTwoFac

a* a=a^2

±sqrt(6^2)

SqrtPowToNumber

sqrt(a^2)=a

± 6

The square root can be simplified to 6. The same reasoning holds when we consider -sqrt(36). In this case, we obtain - 6 so the answer is ± 6.

Subchapter links

Exercises p.10-p10