A student solved the given quadratic equation in the following way :


Which of the following represents the error committed by the student ?

Correct option is D

The student's solution is correct. The equation x² + 6x = 27 has two solutions: x = 3 and x = -9. The student correctly found one of the solutions, x = 3.
The student's solution could be improved by finding the other solution, x = -9. However, this is not strictly necessary, as the question only asks for one solution.