Add/Subtract Polynomials

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Simplify $6\left(v^{2}-v-1\right)+5\left(2v^{2}+v+1\right)$

**Answer**

$\;\;\;6\left(v^{2}-v-1\right)+5\left(2v^{2}+v+1\right)$

$=6v^{2}-6v-6+10v^{2}+5v+5$

$=(6v^{2}+10v^{2})+(-6v+5v)+(-6+5)$

$=16v^{2}-v-1$