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Addition and Subtraction of Algebraic Expression

Solve the fol...

Question

Solve the following:
$2 (5 x^{2} + 7 x + 8) - (4 x^{2} - 7 x + 3) =$

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Solution

Given, $2 (5 x^{2} + 7 x + 8) - (4 x^{2} - 7 x + 3)$

$= 10 x^{2} + 14 x + 16 - 4 x^{2} + 7 x - 3$

$= 6 x^{2} + 21 x + 13$

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