Answer
$$8-4\cdot3\cdot(-2)^2=-40$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}8-4\cdot3\cdot(-2)^2& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}8-12\cdot(-2)^2 \xlongequal{ } \\[1 em] & \xlongequal{ }8-12\cdot4 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}8-48 \xlongequal{ } \\[1 em] & \xlongequal{ }-40\end{aligned} $$ | |
| ① | $$ 4 \cdot 3 = 12 $$ |
| ② | $$ 12 \cdot 4 = 48 $$ |
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