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Question

Find the values of a and b, the sum and the product of the roots of the equation 4ax2+4bx+3=0 are 1/2 and 3/16 respectively.

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Solution

Given,

sum of roots =12

product of roots =316

P(x)=x2(sumofroots)x+(productofroots)

x2(12)x+(316)=0

16x28x+3=0......(1)

Given, 4ax2+4bx+3=0.......(2)

comparing (1) and (2), we get,

4a=16a=4

4b=8b=2

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