$6\sin^2x=3\sin x+9$
$14x+16=10x+5x-2$
$\left(tx-1+s^2\right)\:\left(tx-1\:-s^2\right)$
$x^2-10x+25=100$
$\left(-1\right)\cdot\left(-3\right)\cdot\left(+3\right)$
$\left(6n-1\right)^2$
$2x^2+5x-3$
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