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# Adding and Subtracting Square Roots

 9.4 Adding and Subtracting Square Roots Example 1 Simplify. Example 2 Simplify the square roots, then combine like radicals . Example 3 Simplify the square roots , then combine like radicals . Example 4 Simplify the square roots , then combine like radicals . Example 5 Explain the mistake, then simplify correctly. Example 6 Find the perimeter of the figure. Example 7 Multiply . Example 8 Multiply . Example 9 Multiply. Example10 Multiply. Rationalizing a Denominator Containing a Sum or Difference Multiply the numerator and denominator by the conjugate of the denominator.Example 11 Rationalize the denominator and simplify . Example 12 Rationalize the denominator and simplify .
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