Question
Answer
$$sqrt\cdot121+sqrt-27-sqrt\cdot81+sqrt-27=42qrst-54$$
Explanation
| $$ \begin{aligned}sqrt\cdot121+sqrt-27-sqrt\cdot81+sqrt-27& \xlongequal{ }121qrst+qrst-27-81qrst+qrst-27 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}42qrst-54\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{121qrst} + \color{red}{qrst} \color{green}{-27} \color{orange}{-81qrst} + \color{orange}{qrst} \color{green}{-27} = \color{orange}{42qrst} \color{green}{-54} $$ |
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