$2\left|12\right|+4\left|8\right|$
$y^2-9y$
$16x^2-96x+9y^2+36y+36=0$
$729y^{15}.4y^2x^2$
$\tan\left(x\right)-6=-4$
$1+\sin\left(2x\right)=\sin\left(x\right)^2+\cos\left(x\right)^2$
$9x-4=7-2x$
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