2 square root 21 + 3 square root 21 = 5 square root 21
10 square root 21 + 10 square root 42 cannot be simplified further.
The simplified form of square root 52 is 2 square root 13.
The simplified form of square root 24 + square root 28 is 2 square root 6 + 2 square root 7.
add 2 square root 21 + 3 square root 21
10 square root 21
10 square root 42
square root 52
square root 24 + square root 28
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