Question

The relation between a and b for which the equation abx^2 – (a^2 + b^2)x + ab = 0 has equal

roots, is :

(a) a + b = 0 (b) a – b = 0 (c) ab = 1 (d) both ‘a’ and ‘b’​

Answer 1

solution is in the above pic

hope it helps