## Algebra and Trigonometry 10th Edition

$(t+2)(t-3)$
$t^2-t-6=t^2+2t-3t-6$ (notice that $-t=2t-3t$) $t^2-t-6=t(t)+2(t)+(-3)t+(-3)2=t(t+2)-3(t+2)=(t+2)(t-3)$