If Robert writes coefficient of x incorrectly while writing a quadratic equation and finds the roots as 2 and 8

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If Robert writes coefficient of x incorrectly, while writing a quadratic equation and finds the roots as -2 and 8. Steven makes a mistake in writing the constant term and finds the root as 3 and 9. Find the correct equation.
(A) x²-12x-16=0 (B) x²+12x-16=0 (C) x²-12x+16=0 (D) x²+12x+16=0: Asked In GRE Devendra Marghade (5 years ago); Unsolved; Is this Puzzle helpful? (2) (2) Submit Your Solution Quadratic Equations

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Latest GRE Aptitude Question SOLUTION: If Robert writes coefficient of x incorrectly, while writing a quadratic equation and finds the roots as -2 and 8. Steven makes a mistake in writing the constant term and finds the