Question 244631
1) We know that a square root of a number is the result of another number multiplied by itself.
2) We also know the multiplication of two positive or negative numbers would always result in a positive number.
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Therefore, we can conclude that negative numbers do not have square roots.
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However, in order to deal with problems including square roots of negative numbers, 
Rafael Bombelli (back in 1572) invented the imaginary number we know today as "i".
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"i" = {{{sqrt(-1)}}}
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Suppose your problem would have been {{{x=sqrt(-9)}}}... since we know the square root of 9 is 3, we could've then say {{{x=3sqrt(-1)}}} ...same as to say... {{{x=3i}}}
But in your problem, you may leave it as {{{x=sqrt(-3)}}} or expand it to {{{sqrt(3)*sqrt(-1)}}} ...or... {{{sqrt(3)*i}}}
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I hope this explanation helped.  :)