SOLUTION: Find the value of k for the equal equation (k+4) x+(k+1) x+1=0has equal roots

SOLUTION: Find the value of k for the equal equation (k+4) x+(k+1) x+1=0has equal roots

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Question 928877: Find the value of k for the equal equation (k+4) x+(k+1) x+1=0has equal roots

Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!
I guess you have quadratic equation:

in the quadratic equation the roots are equal when
the discriminant
comparing the equation

so,

or

check the roots:
if

...roots will be same

=>... double solution

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