Question
Answer
$$\sqrt{98}+4\sqrt{2}=11\sqrt{2}$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}\sqrt{98}+4\sqrt{2}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}7\sqrt{2}+4\sqrt{2} \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}11\sqrt{2}\end{aligned} $$ | |
| ① | $$ \sqrt{98} =
\sqrt{ 7 ^2 \cdot 2 } =
\sqrt{ 7 ^2 } \, \sqrt{ 2 } =
7 \sqrt{ 2 }$$ |
| ② | Combine like terms |
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