How do you solve $9p^2-15p-6=0$ ?

May 10, 2016

$p=-1/2$ or $p=2$

$0 = 9p^2-15p-6$

$=3(3p^2-5p-2)$

$=3(3p^2-6p+p-2)$

$=3(3p(p-2)+1(p-2))$

$=3(2p+1)(p-2)$

Hence:

$p=-1/2$ or $p=2$

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How do you solve 9p^2-15p-6=09p^2-15p-6=0?