$\left(10x\frac{7}{5y}\right)$
$9+3\:\left(3\:-7\right)$
$\left(2x^3+1+6x^4\right)+\left(4+5x^3+3x^4\right)$
$\sin\left(x-20\right)$
$-cos\left(\frac{\pi}{3}-x\right)-sen\left(x\right)$
$-157-242-276$
$\int\left(8x^4+3x^3+2x-5\right)dx$
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