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The adjacent sides of a rectangle are x^...

The adjacent sides of a rectangle are `x^(2) - 4xy + 7y^(2)` and `x^(3) - 5xy^(2)`. Find its area.

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The correct Answer is:
`(x^(5) - 4x^(4)y + 2x^(3)y^(2) + 20x^(2)y^(3) - 35xy^(4))` sq. unit
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Factorise : (iv) 5x^(2) - 4xy - 12y^(2)

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Subtract : 2x^(2) + 3xy - 4y^(2) " from " 4x^(2) - xy +3y^(2)

Write the coefficient of : 4xy in x^(2) - 4xy + y^(2)