$1+\frac{1}{2}\left(4x-6\right)=-2$
$\left(2a-b\right)+s+\:\left(8a\:-3b\right)+j+\:\left(2a-b\right)+m+\left(2a-b\right)+l+\left(8a-3b\right)+p+\left(2a-b\right)+f$
$\left(-9\right)^3-\left(-1\right)^9$
$-8x\:-\:10\:>\:18\:-\:16x$
$6y^3-7x^2+4+4x-1-5y^3+x^2$
$7x^3\left(3x^3-x^2+16r+10\:\right)$
$\lim_{x\to4}\frac{\sqrt{x-4}}{\sqrt{x+5}-3}$
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