If the roots of the quadratic equation kx2+ (a + b)x+ ab are (-1,- b),What is the value of k?

If the roots of the quadratic equation kx2+ (a + b)x+ ab are (-1,- b),

1.	If the roots of the quadratic equation kx2+ (a + b)x+ ab are (-1,- b),What is the value of k?
Answer» If the roots of the quadratic equation kx²+ (a + b)x + ab are (-1) and (-b) then the value of k is 1. Aquadratic equationis in the form ax²+ bx + c = 0, where a ≠ 0.