$2h-3p+5p-2q-4h-3q$
$-21x^4+9x^4$
$\left(ln\left(y\right)\right)^6\cdot y'=x^6y$
$\left(2cosx\right)\left(cosx\right)+\left(senx\right)\left(2senx\right)$
$3+0.5\left(4\right)$
$x^2-26x=-15$
$4x-2=-4x+6$
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