The product of negative three squared is nine. To square a number means to multiply that number by itself, and multiplying two negatives together yields a positive number, as About.com explains. Negative three times negative three, therefore, is nine.
A negative number is never a perfect square. The smallest perfect square possible is zero because zero times zero is zero. The square root of a number is potentially either positive or negative. For example, the square root of nine is three or negative three. Squared odd numbers always have an odd result, and squared even numbers always yield an even result. In this case, negative three is odd, and its square is nine, which is also odd.
Learn MoreThe square root of 720 is 26.83. The square root is determined by finding a number that, when multiplied by itself, equals the number in the square root function. For 720, this calculation is expressed as 26.83 x 26.83 = 720.
Full Answer >Scientific notation word problems ask the student to perform operations with two or more large numbers. For example, if light travels at 3 x 10^8 meters per second, how far will a beam of light travel in one day?
Full Answer >The square root of 125 is approximately 11.18. The decimals of the exact answer go on infinitely because the square root of 125 is an irrational number.
Full Answer >The square root of 72 is approximately 8.49 when rounded to the nearest hundredth. Since it is not a perfect square, it can most easily be solved by using a scientific calculator. If this option is unavailable, there are a few tricks you can do to arrive at a solution.
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