$2^3+4\cdot2^2-3\cdot2+2$
$\left(9ab+1\right)^2$
$\int\ln\left|x\right|\left(-2x\right)dx$
$x\left(3a-2b\right)-3a+2b$
$\log_b\:9+\log_b\:9$
$64x^3-81x$
$4x+56\ge104$
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