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What is the positive sqare root of a number?
Square roots can be positive or negative. 9 x 9 = 81 -9 x -9 = 81 9 is the positive square root of 81.
Why can the square root of 9 be 3 or -3?
a negative multiplied by a negate is a positive a positive multiplied by a positive is a postivive therefore the square root of 9 can be + or - 3
What the positive square root of 85 is between?
92 = 81 102 = 100 so the positive square root is between 9 & 10
How is it possible to have a positive or negative answer to the square root of a number?
What do you get when you multiply positive 3 by itself ? (You get 9.) What do you get when you multiply negative 3 by itself ? (You get 9 again.) The square root of a number is something which, when you multiply it by itself, gives you the number. When we multiplied positive 3 by itself, we got 9. So positive 3 is a square root of 9. When we multiplied negative 3 by itself, we got 9 again. So negative 3 is also a square root of 9. Every positive number has two square roots. They're both the same digits, but one is positive and the other one is negative.
Does every positive number have only one square root?
No - every positive number has a positive and negative square root. For example: sqrt(9) = 3 and -3, because 3 x 3 = 9 and -3 x -3 = 9.
