$sin^2w-0,5=\cos^2w$
$3a+2b-a-c+b$
$4-\left(2a+2\right)+\left(4a+5\right)-\left(7-3a\right)$
$x^2+x+36$
$3x+s\left(x+y\right)$
$\frac{dy}{dx}=\frac{1+x+y}{6+x+y}$
$3v^2-27v-30$
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