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Ask iit jee aieee pet cbse icse state board community Community Discussion Question: Pair Of Straight Lines
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m.viddya (101)

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Q.I need a method/solution/shortcut to find out the individual line equations of 12x2-20xy+7y2=0.
    
pinnacle (223)

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factorisation?

12xsq - 14xy - 6xy+7ysq =0
2x[6x- 7y] -y[6x-7y] = 0
thus two equations are
2x-y = 0
and
6x- 7y= 0
Dats d only method I know

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LAMPARD (1142)

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Write the exp. as
12x2-14xy-6xy+7y2=0
=>(2x-y)(6x-7y)=0.
These are the reqd. lines.

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Forum Index -> Analytical Geometry
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