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In a parallelogram as shown in the figur...

In a parallelogram as shown in the figure `(a != b)` : equation of the diagonal AC is `(a + b) x + (a + b)y = 3 ab`

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In a parallelogram as shown in the figure (a != b) Prove that the equation of the diagonal AC is (a + b) x + (a + b)y = 3 ab

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