Simplify 8a^2-2+5+10a+9+7

$8 a^{2} - 2 + 5 + 10 a + 9 + 7$

Add $- 2$ and $5$ .

$8 a^{2} + 3 + 10 a + 9 + 7$

Add $3$ and $9$ .

$8 a^{2} + 10 a + 12 + 7$

Add $12$ and $7$ .

$8 a^{2} + 10 a + 19$

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