Question
Answer
$$(-3)^2-4\cdot2\cdot(-1)=17$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}(-3)^2-4\cdot2\cdot(-1)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}9-4\cdot2\cdot(-1) \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}17\end{aligned} $$ | |
| ① | $ (-3) ^ 2 = 9 $ |
| ② | Combine like terms |
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Simplify Radical Expression