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Let a and b be the solutions of the equation 2x^2 + 10x + 5 = 0. What is the value of (2a - 3)(4b - 6)?

 Feb 27, 2021
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sum of roots = -b/a = -10/2 = -5

 

product of roots = c/a = 5/2

 

 

(2a - 3)(4b - 6) = 8ab - 12a - 12b + 18

 

= 8(5/2) - 12(-5) + 18

 

98

 Feb 28, 2021

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