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Q: When the sum of 5 and twice a positive number is subtracted form the square of that number the result is zero what is the number?

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The number is two

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2 or -1

12

The answer is 230.

The number to be subtracted is 11.The number to be subtracted is 11.The number to be subtracted is 11.The number to be subtracted is 11.

No. The square of a positive number is positive; the square of a negative number is also positive; and the square of zero is zero. If you want to square a number and get a negative result, you need complex numbers. For example, the square of 2i is -4.

2. 2 squared = 4, and 4-2 = 2

There is no known number that can be squared and produce a negative number since if the number is positive, the result will be positive, and if it's negative the result will still be positive. Accordingly the square roots of negative numbers are normally expressed as a factor of "i" where i is the square root of -1. In that case the square root of -25 is 5i.

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2 (two)

(-8)2 = 64.Anytime you square a number, the result is a Positive number.

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