$+15-4573-788$
$x^4+3x^3-10x^2$
$\frac{dy}{dx}e^{y-x}\sec\left(y\right)\left(1+x^2\right)$
$x2+5x-25=0$
$34-65+89+87-765$
$-2\arcsin\left(x\right)=\pi$
$x^2-8x-19=0$
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