2017 · Q45
Aman and Alok attempted to solve a quadratic equation. Aman made a mistake in writing down the constant term and ended up in roots (4, 3). Alok made a mistake in writing down the coefficient of x to get roots (3, 2). The correct roots of the equation are
Elementary MathematicsAlgebra
- A-4,-3
- B6,1
- C4,3
- D-6,-1
Explanation
Aman's roots (4, 3) used the correct x-coefficient, so the true sum is 7; Alok's roots (3, 2) used the correct constant, so the true product is 6. The equation x² − 7x + 6 = 0 has roots 6 and 1: option B.