Question
Answer
$$(-5i-5)\cdot(-7-1)=40i+40$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}(-5i-5)\cdot(-7-1)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}(-5i-5)\cdot(-8) \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}40i+40\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{-7} \color{blue}{-1} = \color{blue}{-8} $$ |
| ② | $$ \left( \color{blue}{-5i-5}\right) \cdot -8 = 40i+40 $$ |
This page was created using
Complex Expression calculator