$\frac{4z^2-252z+3969}{49}$
$y=\ln\left(3x+6\right)^{2}$
$\int\frac{1}{x\left(6+2x\right)}dx$
$-578+\left(-317\right)$
$\int_0^b\left(x+1\right)^{\left(-\frac{1}{2}\right)}dx$
$4x^5+2nx^2+nx$
$3^3a^3-b^3$
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