Question
Answer
$$(x+5.7)(x+0.4)=x^2+5x$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}(x+5.7)(x+0.4)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}x^2+0x+5x+0 \xlongequal{ } \\[1 em] & \xlongequal{ }x^20x+5x0 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}x^2+5x\end{aligned} $$ | |
| ① | Multiply each term of $ \left( \color{blue}{x+5}\right) $ by each term in $ \left( x0\right) $. $$ \left( \color{blue}{x+5}\right) \cdot \left( x0\right) = x^20x+5x0 $$ |
| ② | Combine like terms: $$ x^2 \color{blue}{0x} + \color{blue}{5x} 0 = x^2+ \color{blue}{5x} $$ |
This page was created using
Simplify polynomials calculator