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- If the roots of the equation 2x² - 5x + b = 0 are in the ratio of 2:3, then find the value of b?
Question 1:
If the roots of the equation 2x² - 5x + b = 0 are in the ratio of 2:3, then find the value of b? A. 3
Feedback Let the roots of the equation 2a and 3a respectively.
2a + 3a = 5a = -(- 5/2) = 5/2 => a = 1/2
Product of the roots: 6a² = b/2 => b = 12a2
a = 1/2, b = 3.
2a + 3a = 5a = -(- 5/2) = 5/2 => a = 1/2
Product of the roots: 6a² = b/2 => b = 12a2
a = 1/2, b = 3.
B. 4
C. 5
D. 6
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