Question
Factor polynomial $$ 20x^{3}-15x^{2}+16x-12 $$
Answer
$$ 20x^{3}-15x^{2}+16x-12 = ( 5x^{2}+4 )( 4x-3 ) $$
Explanation
To factor $ 20x^{3}-15x^{2}+16x-12 $ we can use factoring by grouping:
Group $ \color{blue}{ 20x^{3} }$ with $ \color{blue}{ -15x^{2} }$ and $ \color{red}{ 16x }$ with $ \color{red}{ -12 }$ then factor each group.
$$ \begin{aligned} 20x^{3}-15x^{2}+16x-12 = ( \color{blue}{ 20x^{3}-15x^{2} } ) + ( \color{red}{ 16x-12 }) &= \\ &= \color{blue}{ 5x^{2}( 4x-3 )} + \color{red}{ 4( 4x-3 ) } = \\ &= (5x^{2}+4)(4x-3) \end{aligned} $$This page was created using
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