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