$x^2+5x-14$
$\left(2^{10}\right)^7$
$x^2-10\:x+59.14$
$-3z-\left(-z-2\right)-2z-2$
$y=\left(x^2+2\right)^2$
$\left(c+ecosx-gcosy\right)^2$
$7+6-8+15-11$
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