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What is the exact value for the expression the square root of 189. − the square root of 21. + the square root of 84.? Simplify if possible. the square root of 21. 6 the square root of 7. 4 the square root
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What is the exact value for the expression the square root of 189. − the square root of 21. + the square root of 84.? Simplify if possible. the square root of 21. 6 the square root of 7. 4 the square root of 21. 24 the square root of 7.

User Izkata
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It's 4 the square root of 21
User Gabriel Weidmann
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