$\left(8x^2+46x+45\right)$
$3^3-5^2$
$\cos\left(-\frac{\pi}{6}\right)\cos\left(\frac{\pi}{7}\right)+\sin\left(\frac{\pi}{6}\right)\sin\left(\frac{\pi}{7}\right)$
$\:\left(5b-7\right)^2$
$du=\frac{1}{2}x^{-\frac{1}{2}}dx$
$67^0$
$\cot\left(b\right)\sin\left(b\right)$
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