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If x-2y+4=0a n d2x+y-5=0 are the sides o...

If `x-2y+4=0a n d2x+y-5=0` are the sides of an isosceles triangle having area `10s qdotu n i t s` , the equation of the third side is (a) `3x-y=-9` (b) `3x-y+11=0` (c) ` x-3y=19` (d) `3x-y+15=0`

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