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You are watching: What is the principal square root of 81 Sqrt(81). Discover the square root of 81 or any type of other genuine number, optimistic or negative. Right here are the answers to inquiries like: Square source of 81 or what is the square root of 81? What is square root? definition of square rootA square source of a number \"x\" is a number y such the y2 = x, in various other words, a number y who square is y. For example, 9 is the square source of 81 since 92 = 9•9 = 81, 9 is square root of 81 since (9)2 = (9)•(9) = 81. As soon as writing math, world often use sqrt(x) to typical the square root of x. Read an ext about square source here: Square root  Wikipedia and here: Square source  Wolfram Square Symbol?Here is the square source symbol. The is is denoted by √, recognized as the radical authorize or radix. numbersquaresquareroot
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