$\log_b\left(x+1\right)-\log_b\left(x+2\right)$
$2^5\cdot2^2$
$\int_{-1}^1\left(\frac{-3x^4+7x^5-5}{x^4}\right)dx$
$8+3d-5d+7$
$3xy+y$
$2\:sin\:2x\:=\:.5$
$\left(+100\right)\:\cdot\:\left(-10\right)\:\cdot\:\left(+1\right)\::\:\left(-1\right)\:$
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