SOLUTION: can you please find the discriminant, and determine the number of real solutions 81x^2+4=0 Thank you

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Question 177080: can you please find the discriminant, and determine the number of real solutions
81x^2+4=0
Thank you
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Solved by pluggable solver: Computing the Discriminant


From 81x%5E2%2B4 we can see that a=81, b=0, and c=4



D=b%5E2-4ac Start with the discriminant formula.



D=%280%29%5E2-4%2881%29%284%29 Plug in a=81, b=0, and c=4



D=0-4%2881%29%284%29 Square 0 to get 0



D=0-1296 Multiply 4%2881%29%284%29 to get %28324%29%284%29=1296



D=-1296 Subtract 1296 from 0 to get -1296



Since the discriminant is less than zero, this means that there are two complex solutions. In other words, there are no real solutions.