SOLUTION: find the desciriminat solution, and number and type of routs for the quesion 21+x2-6x=0

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Question 749408: find the desciriminat solution, and number and type of routs for the quesion 21+x2-6x=0
Found 2 solutions by lynnlo, ikleyn:
Answer by lynnlo(4176)   (Show Source): You can put this solution on YOUR website!

Answer by ikleyn(52957)   (Show Source): You can put this solution on YOUR website!
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find the discriminant and number and type of routs for the quesion 21+x2-6x=0
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 

Write the given quadratic equation in the standard form ax^2 + bx + c = 0

    x^2 - 6x + 21 = 0.


The discriminant is

    d = b^2 - 4ac = (-6)^2 - 4*1*21 = 36 - 84 = -48.


Since the discriminant is negative, we conclude that the given equation 
has two different roots that are complex numbers.

Solved.


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