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If one root of the equation 2x^2+b x+c=0...

If one root of the equation `2x^2+b x+c=0` is three times the other, then `b^2: a c=` (a)`3:1` (b) 3:16 (c) 16:3 (d) 16:1

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`ax^2+bx+C=0`
let one root be `alpha`
other root be `3 alpha`
sum=`alpha + 3 alpha=4 alpha=-b/a` <
...
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