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Let x−2y+7=0 be a chord of the circle x2+y2−2x−10y+1=0. If the midpoint of the chord is P(α,β), then the value of 5|α−β| is

Answer» Let x2y+7=0 be a chord of the circle x2+y22x10y+1=0. If the midpoint of the chord is P(α,β), then the value of 5|αβ| is


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