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Addition and Subtraction of Algebraic Expressions

c Subtract: -...

Question

Question 58 (c)

Subtract:

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

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Solution

We have,
$x^{3} + 3 x y^{2} - x^{2} y - (- 4 x^{2} y - y^{3}) = x^{3} + 3 x y^{2} - x^{2} y + 4 x^{2} y + y^{3} = x^{3} + y^{3} + 3 x^{2} y + 3 x y^{2}$

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Question 59 (a)

What should be added to $x^{3} + 3 x^{2} y + 3 x y^{2} + y^{3}$ to get $x^{3} + y^{3} ?$

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Addition and Subtraction of Algebraic Expressions

Standard VII Mathematics

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