Question
Answer
$$r((7-4)^2+(5-9)^2)=r\cdot25$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}r((7-4)^2+(5-9)^2)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}r(3^2+(-4)^2) \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}r\cdot(9+16) \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle3}{\textcircled {3}} } }}}r\cdot25\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{7} \color{blue}{-4} = \color{blue}{3} $$Combine like terms: $$ \color{blue}{5} \color{blue}{-9} = \color{blue}{-4} $$ |
| ② | 5-9=-45-9=-4 |
| ③ | Combine like terms: $$ \color{blue}{9} + \color{blue}{16} = \color{blue}{25} $$ |
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