Question

चूस द करेक्ट वैल्यू ऑफ एक्स फॉर एजुकेशन​

Answer 1

Answer:

For the quadratic equation ax2+bx+c=0,a,b,c,εQ

Roots are given by 

α=2a−b+b2−4ac and 

β=2a−b−b2−4ac

If D=0 then α=2a−b=β i.e. the roots are equal and real. 

Since a,b and c∈Q, the roots will be equal and rational.

Hence, statements P and R are correct.