Add $ \, \color{blue}{ 20s^3+220s^2+720s+720 } \, $ and $ \, \color{orangered}{ s^3+10s^2+29s+20 }$.
Answer
$$ \left( \color{blue}{20s^3+220s^2+720s+720} \right) + \left( \color{orangered}{s^3+10s^2+29s+20} \right) = 21s^3+230s^2+749s+740 $$
Explanation
Step 1: Write second polynomial below the first one. Making sure like terms are lined up.
$$ \begin{array}{lrrrr} & 20s^3 & 220s^2 & 720s & 720 \\ \color{blue}{ + } & s^3 & 10s^2 & 29s & 20 \\ \hline \end{array} $$Step 2: Combine like terms (add each column):
$$ \begin{array}{lrrrr} & 20s^3 & 220s^2 & 720s & 720 \\ \color{blue}{ + } & s^3 & 10s^2 & 29s & 20 \\ \hline & 21s^3 & 230s^2 & 749s & 740 \end{array} $$This page was created using
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