if a and b are the zeros of the quadratic polynomial p(x)=x2-k(x+1)-a and if (a+1)(b+1)=0,find a

if a and b are the zeros of the quadratic polynomial p(x)=x2-k(x+1)-a

1.	if a and b are the zeros of the quadratic polynomial p(x)=x2-k(x+1)-a and if (a+1)(b+1)=0,find a
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