Question 1202276
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Answer:  {{{4z^3+5z^2+6}}}


Work Shown:
{{{(4z^3+9z^2-z)+(-4z^2+z+6)}}}


{{{4z^3+9z^2-z-4z^2+z+6}}}


{{{4z^3+(9z^2-4z^2)+(-z+z)+6}}}


{{{4z^3+5z^2+0z+6}}}


{{{4z^3+5z^2+6}}}
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