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\"\"

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The expression is \"\"

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Square Root of a Number: If b2 =a, then b is a square root of a.

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\"\"                    (Substitute x = 121)

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\"\"                          (The square root of 121 is 11)

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\"\"

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\"\"                              (Multiply: \"\")

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\"\"                                    (Subtract: \"\")

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\"\"

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The value of expression is \"\".

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