Question
Answer
$$8x+5x+5-(8x^2+3)=-8x^2+13x+2$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}8x+5x+5-(8x^2+3)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}13x+5-(8x^2+3) \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}13x+5-8x^2-3 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle3}{\textcircled {3}} } }}}-8x^2+13x+2\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{8x} + \color{blue}{5x} +5 = \color{blue}{13x} +5 $$ |
| ② | Remove the parentheses by changing the sign of each term within them. $$ - \left( 8x^2+3 \right) = -8x^2-3 $$ |
| ③ | Combine like terms: $$ 13x+ \color{blue}{5} -8x^2 \color{blue}{-3} = -8x^2+13x+ \color{blue}{2} $$ |
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