Oh, dude, the square root of 987654321 squared is 987654321. I mean, it's like when you square root something, you're basically undoing the squaring, so you end up right back where you started. It's like a math magic trick, but not really that magical.
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[square root (78)] squared = 78. There is not a surd from for an integer.
Do you mean: What is the square root of (8 squared)? If so, there are two answers: 8 and -8. Or do you mean: What is the (square root of 8) squared? If so, there is only one answer: 8.
it is 18 because when you put all the numbers back into the square root it becomes the square root of 18 and the square root of 18 squared would be 18
It's the square root of a2+b2. It cannot be simplified. It is NOT a+b. The answer is c square.