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Question
`(x-1)(2x-1)=0`
Solution
`2x^2-3x+1=0`
Comparing it with `ax^2+bx+c=0` we get
`a=2, b=-3 and c=1`
∴ Discriminant `D=b^2-4ac=(-3)^2-4xx2xx1=9-8=1`
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