$\left(t^2+2t+2\right)\left(t-1\right)$
$1-49a^2b^2$
$5a\:+6b^2\:para\:b\:=\:2\:a=7$
$x^2-12x=-36$
$\left(2a+3y\right)^2$
$\int ye^{9y}dy$
$x+2y=19$
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