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Mathematics, 07.10.2019 15:20 xbeatdroperzx

What is the exact value for the expression the square root of 189. βˆ’ the square root of 21. + the square root of 84.? simplify if possible.

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What is the exact value for the expression the square root of 189. βˆ’ the square root of 21. + the sq...
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