The correct roots of the equation are (a) 9 and 1
From the complete question, their mistakes are:
<u>Anu</u>
- Roots: 8 and 2
- Wrong constant term
<u>Aji</u>
- Roots: -9 and -1
- Wrong coefficient
A quadratic equation is represented as:
Where:
--- product of roots
--- sum of roots
Anu made a mistake in the constant term, so we consider the sum of roots
Aji made a mistake in the coefficient, so we consider the product of roots
The possible equations from the above sum and products are:
.
.
.
Of all the above equations, the most likely equation is , and it has a root of 9 and 1
Hence, the correct roots are (a) 9 and 1
Read more about roots of equations at: