SOLUTION: Using the form of x^2=k for an equation. Is the solution always going to be real numbers?
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Question 122661: Using the form of x^2=k for an equation. Is the solution always going to be real numbers?
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
If then the solution will not be a real number. To see why, let's solve for x:
Start with the given equation
Take the square root of both sides
So if , then we won't have a real answer (remember you cannot take the square root of a negative number). So the answer will be an complex number.
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