$m^2-m-6$
$\lim_{x\to\infty}\left(1-\frac{1}{7^x}\right)^{4x}$
$1.2555+0.222\left(12\right)$
$\frac{d}{dx}\:\frac{4}{\sqrt{x}}$
$x^2+7x+10>0$
$\cos^2\left(x\right)+\sin\left(x\right)=\sin^2\left(x\right)$
$1-2\sin b\cdot\cos b=\left(\sin b-\cos b\right)^2$
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