$\frac{1+tan^2x}{sec^2x\left(sin\:x\:+cos\:x\right)}$
$2f^2-3w+f^2+9w$
$a^8.a^3.a^5$
$\left(8-11\right)-\left(3+1-4-6\right)$
$\frac{d}{dx}sinx+2cos2y=1$
$\left(3x^2+4x-1\right)^2$
$-4m^3\left(5m^2+2m\right)$
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