$x=\sqrt{2x+7}-2$
$\lim_{x\to1}\left(\frac{1}{x-1}\right)^{\ln\left(x\right)}$
$\left(9c-8d\right)+\left(2c-6\right)+\left(-d+3\right)$
$\lim_{x\to\infty}\left(\frac{\sin x^2}{x}\right)$
$2\sin\left(x-10\right)^2+\sin\left(x-10\right)=0$
$-\:2\:a\:2\:\:x\:3\:\:-\:4\:a\:2\:\:x\:2\:\:-\:2\:a\:2\:\:x$
$2b^2+88a-88a$
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