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