$-4x+2y+z=11$
$\int\sqrt{\left(\frac{1}{3}x\right)}-3x^2dx$
$\left(+5b^2\right)^2$
$\frac{5x^3+4x+3x^2-7}{x+5}$
$\int\frac{\sqrt{\left(9+x^2\right)}}{x}dx$
$\lim_{x\to2}\:\sqrt{\frac{x^2+3x+4}{x^3+1}}$
$3\cdot y^2=4\cdot x^3-7$
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