Question
Factor polynomial $$ st+5s-2t-10 $$
Answer
$$ st+5s-2t-10 = (s-2)(t+5) $$
Explanation
To factor $ st+5s-2t-10 $ we can use factoring by grouping.
Group $ \color{blue}{ st }$ with $ \color{blue}{ 5s }$ and $ \color{red}{ -2t }$ with $ \color{red}{ -10 }$ then factor each group.
$$ \begin{aligned} st+5s-2t-10 &= ( \color{blue}{ st+5s } ) + ( \color{red}{ -2t-10 }) = \\ &= \color{blue}{ s( t+5 )} \color{red}{ -2( t+5 ) } = \\ &= (s-2)(t+5) \end{aligned} $$This page was created using
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