Question
Answer
$$b^4-2x^4+2b^3x-4bx^3+3b^2x^2=b^4+2b^3x+3b^2x^2-4bx^3-2x^4$$
Explanation
| $$ \begin{aligned}b^4-2x^4+2b^3x-4bx^3+3b^2x^2& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}b^4+2b^3x+3b^2x^2-4bx^3-2x^4\end{aligned} $$ | |
| ① | Combine like terms: $$ b^4+2b^3x+3b^2x^2-4bx^3-2x^4 = b^4+2b^3x+3b^2x^2-4bx^3-2x^4 $$ |
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