$4cos^2x-1=0$
$769.56-384.765$
$136,25+7,8+38,967$
$x^2+7x+1$
$\left(3-4f\right)^3$
$\int\sqrt[3]{z^3+8}z^2dx$
$\frac{dy}{dx}=1+y+x^2+yx^2$
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