Question

If'a' & 'b' are roots of equation x-ax+b=0 then 'ab' is equal to​

Answer 1

Answer:

Sum of the roots =a+b=

A

B

=−a

Product of the roots =ab=

A

C

=−b

⇒a+b=−a and ab=−b

⇒2a=−b and a=−1

⇒b=2 and a=−1