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Earn +20 ptsQ: Is mr x real
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What an multiplicative inverse property and real number?
For every real number, x, which is not zero, there exists a real number x' such that x * x' = x' * x = 1, the multiplicative identity.
The square root of X-5 is a real number if and only if?
X is greater than 5. If X were equal to 5, X-5 would be 0 which has no real square root. If X were 4, X-5 would be -1 which has no real square root, and so on.
If X is real how can you find the max value of X?
42
The statement 2 plus 0 equals 2 is an example of the use of which property of real numbers?
The set of real numbers contains an additive identity - which is denoted by zero - such that, for all real numbers, x, x + 0 = 0 + x = x.
How do you solve X squared is greater than -16?
This can be solved by inspection. You can notice that the square of ANY real number is positive or zero, so "x" can be any real number. ("Greater than" and "less than" don't make much sense for complex numbers.)
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