$\sqrt[4]{162x^2}$
$\int\frac{4}{sin^3x}dx$
$25a-70a+49$
$\frac{\left(\frac{x+6}{3}\right)}{\left(\frac{x}{7}\right)}$
$\frac{d}{dz}4x^3+4xy+7y^3$
$\int3x^{2\:}sen\:\left(7x^3\right)dx$
$-a^2b\left(-ab\right)$
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