$3.26d+9.75d\:-\:2.65$
$x^2-2xy+y^2;x=-3,y=-1$
$\left(a+3b\right)\left(a-3b\right)=0$
$-32\left(\sqrt{18-2x}\right)^{11}$
$-11+5\left(7\right)$
$\left(c^2+5c^4\right)^2=\left(c^2+5c^4\right)^2$
$csc^2x\:+csc\:x$
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