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  • One root of the quadratic equation x² - 12x + a = 0, is thrice the other. Find the value of a?
Question 1:
One root of the quadratic equation x² - 12x + a = 0, is thrice the other. Find the value of a?
A. 29
B. -27
C. 28
D. None of these
Feedback Let the roots of the quadratic equation be x and 3x.
Sum of roots = -(-12) = 12
a + 3a = 4a = 12 => a = 3
Product of the roots = 3a² = 3(3)² = 27.

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