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Algebraic Identity (a-b)^3

Write the exp...

Question

Write the expanded form :
$(9 x + 2 y + z)^{2}$

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Solution

$(9 x + 2 y + z)^{2}$
$= 81 x^{2} + 4 y^{2} + z^{2} + 36 x y + 4 y z + 18 x z$

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