Question
Factor polynomial $$ 28v-12vx+49-21x $$
Answer
$$ 28v-12vx+49-21x = (4v+7)(7-3x) $$
Explanation
To factor $ 28v-12vx+49-21x $ we can use factoring by grouping.
Group $ \color{blue}{ 28v }$ with $ \color{blue}{ -12vx }$ and $ \color{red}{ 49 }$ with $ \color{red}{ -21x }$ then factor each group.
$$ \begin{aligned} 28v-12vx+49-21x &= ( \color{blue}{ 28v-12vx } ) + ( \color{red}{ 49-21x }) = \\ &= \color{blue}{ 4v( 7-3x )} + \color{red}{ 7( 7-3x ) } = \\ &= (4v+7)(7-3x) \end{aligned} $$This page was created using
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