$15a^2-8a^2+a^2$
$4+1^4$
$2+\left(5+y\right)$
$17\cdot\left(-4\right)$
$\left(\tan\left(x\right)+1\right)\left(3\tan\left(x\right)-\sqrt{3}\right)=0$
$\left(7m^2-8n\right)^2$
$a+w=5a$
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