$\left(r^9+10q^4\right)^2$
$-49x^2+56xy+16y^2$
$\sin\left(x\right)^2=1-\cos\left(0.45\right)^2$
$ycos\left(xy\right)dx+\left(xcos\left(xy\right)+sen\left(y\right)\right)dy=0$
$f\left(x\right)=\frac{6}{3x^7}+2tanx$
$0.07870170682-1+1$
$u\:+\:2u\:=\:18$
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