0
Anonymous
32
you should get a calculator
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10
-7
9 is.
(3 root 7) squared = (3 root 7) (3 root 7) = (3x 3) ( sq root 7 x 7) = 9 x sq root 49 = 9 x 7 = 63
well, the square root of 81 is 9, and seven squared is 49, so it wud be 40