$-7790\::\:-90$
$\left(\frac{\sin\left(20\right)\cdot\cos\left(40\right)+\cos\left(20\right)\cdot\sin\left(40\right)}{\cos^2\left(30\right)-\sin^2\left(30\right)}\right)$
$\frac{u^{\frac{3}{2}}}{\frac{3}{2}}$
$x+3+3x^2-3x+6$
$3x+4\left(2x\right)+4\left(-2y\right)$
$\int3y^2\left(6y^2-9\right)^6dy$
$\frac{115\pi}{180}$
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