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प्रश्न
The ratio of the sum and product of the roots of the equation `7x^2-12x+18=0` is
(a) 7:12 (b)7:18 (c)3:2 (d)2:3
उत्तर
(d) 2:3
Given:
`7x^2-12x+18=0`
∴ `α+β=12/7 and β=18/7` where α and γ are the roots of the equation
∴ Ratio of the sum and product of the roots =`12/7: 18/7`
=`12:18 `
=`2:3`
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L.H.S. = `square`
