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For what value of k , x=a is a solution of an equation x^2-(a+b)x+k=0?

For what value of k , x=a is a solution of an equation x^2-(a+b)x+k=0?

Grade:10

1 Answers

Vikas TU
14149 Points
7 years ago
If x=a is a solution of an equation x^2-(a+b)x+k=0
then it must satify the eqn. 
Hence at x = a we get,
a^2 – a^2 – ab + k = 0
k = ab

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