Simplify :
$3 x (2 x + 5) - 6 (9 x - 1) + 3 - 10$

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Solution

$3 x (2 x + 5) - 6 (9 x - 1) + 3 - 10$
$= 6 x^{2} + 15 x - 54 x + 6 - 7$
$= 6 x^{2} - 39 x - 1$

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