Simpllify $: 2 x^{2} + 5 x - 1 + 8 x + x^{2} + 7 - 6 x + 3 - 3 x^{2}$

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Solution

$2 x^{2} + 5 x - 1 + 8 x + x^{2} + 7 - 6 x + 3 - 3 x^{2}$
$= 3 x^{2} - 3 x^{2} + 13 x - 6 x + 10 - 1$
$= 7 x + 9$ Ans.

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2 x^{2} + 5 x - 1 + 8 x + x^{2} + 7 - 6 x + 3 - 3 x^{2}

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