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Which of the following numbers is not a real number?


-7 ; square root of 7, - square root of 7; square roots of -7

2007-06-04 04:42:56 · 7 answers · asked by Anonymous in Science & Mathematics Mathematics

7 answers

square root of -7 ,it is imaginary

2007-06-04 04:46:19 · answer #1 · answered by Mein Hoon Na 7 · 0 0

sq root of -7. it turns into an imaginary number. it would be the sq root of 7 times "i." Because if you think about it. What squared is 7. lets say that the number was 9. 3 squared is 9, and -3 squared is also 9. nothing times itself is is -9. Therefor, the square root of -9 = the square root of nine times "i"... or "3i"

2007-06-04 21:43:12 · answer #2 · answered by Kirby 2 · 0 0

square roots of -7 is not a real number.

2007-06-04 11:51:39 · answer #3 · answered by Brave 3 · 0 0

The square root of a negative number is always considered an imaginary number, so √-7 is your answer.

2007-06-04 11:48:04 · answer #4 · answered by Don E Knows 6 · 0 0

square root of -7 is not real. It is equal to
i*√7.
The square root of a negative number is not real,
because the square of any real number is non-negative.

2007-06-04 12:49:10 · answer #5 · answered by steiner1745 7 · 0 0

square root of -7 is not a real number, the others are all real numbers

2007-06-04 11:46:52 · answer #6 · answered by hanumistee 7 · 0 0

square root of - 7 is not a real number. (It does not lie on the number line; all the others do)

2007-06-04 11:53:08 · answer #7 · answered by Como 7 · 0 0

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