Question 330047
Add like terms.
{{{2n^6+9n^6=8n^6}}}
{{{-2n^5+(-6n^5)=-8n^5}}}
{{{4+4=8}}}
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{{{(2n^6 - 2n^5 + 4)+(9n^6 - 6n^5 + 4)=8n^6-8n^5+8=8(n^6-n^5+1)}}}