Question

When b=0 in the equation aײ+b×+c=0,what is the result to a quadratic equation?

Answer 1

For the quadratic equation ax

2

+bx+c=0,a,b,c,εQ

Roots are given by

α=

2a

−b+

b

2

−4ac

and

β=

2a

−b−

b

2

−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.

Answer 2

Answer:

If b=0 then

a*b = 0 = 0+C =0

Therefore C =0

thus the quadratic equation will be 0