$\frac{5\left(3\right)+3}{3}$
$3\left(2x-7\right)+11\left(-2x+2\right)$
$x+30>0$
$4z^2+8z+4=0$
$x^4-x^3+x^3-x$
$\frac{x\cos\left(x\right)\cdot\sec\left(x\right)}{\sin\left(x\right)+\sec\left(x\right)\cdot\cos\left(x\right)}$
$\frac{2}{3}\log_b\left(27\right)+2\log_b\left(2\right)-\log_b\left(3\right)$
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