Simplify the following.

- x + 6 y

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5 x^{2} + x

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4 x - y

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x^{2}

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Solution

Given,
$I. x + 2 y - 2 x + 4 y$

Arrange the like terms to one side and add.
$= x - 2 x + 2 y + 4 y = - x + 6 y$

$II. 2 x^{2} + 3 x^{2} + x = 5 x^{2} + x$

$III. x + y - 2 y + 3 x = x + 3 x + y - 2 y = 4 x - y$

$IV. x^{2} - 5 x + 2 x + 3 x = x^{2} - 5 x + 5 x = x^{2}$

Suggest Corrections

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(i)

(ii)

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