$29\cdot8$
$-6a+6$
$3\tan^2x-1=\sec^2x$
$28v^2+24vz+8z^2$
$3x+\frac{x+1}{2}=4\left(x+2\right)$
$\lim\:_{x\to\:\frac{\pi\:}{2}}\left(cos3x\cdot\:\:secx\right)$
$\frac{d}{dx}\left(\frac{x\sqrt{x^2+5}}{\left(x+5\right)^{\frac{7}{3}}}\right)$
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