$\int\frac{4x-5}{x^2+x-2}dx$
$11b+9b$
$\int\left(\tan\left(2ax\right)\right)dx$
$-x^2-2x$
$\sin\left(\frac{-\sqrt{3}}{7}\right)$
$\left(8x^2-9x+1\right)^2$
$9+3\cdot2$
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