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Expression Formation

Question 2 vi...

Question

Question 2 (vii)

Add:

$4 x^{2} y, - 3 x y^{2}, - 5 x y^{2}, 5 x^{2} y$

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Solution

$4 x^{2} y, - 3 x y^{2}, - 5 x y^{2}, 5 x^{2} y = 4 x^{2} y + (- 3 x y^{2}) + (- 5 x y^{2}) + 5 x^{2} y$
$= 4 x^{2} y + 5 x^{2} y - 3 x y^{2} - 5 x y^{2}$
$= 9 x^{2} y - 8 x y^{2}$

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Question 58 (c)

Subtract:

$- 4 x^{2} y - y^{3}$ from $x^{3} + 3 x y^{2} - x^{2} y .$

{2 x}^{2} y - {3 x y}^{2} + {2 x}^{2} y - {4 x}^{2} y + {2 x y}^{2}

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