$25x\:+\:12x\:-\:31x\:-\:8x\:+5x\:$
$\left(x^4+8\right)\left(x^4-1\right)$
$-\:32\:-1\:-17\:-10$
$\int\left(exp\left(-a\cdot x^2\right)\right)dx$
$64m^2-81$
$+4\:-\:\left(-6\right)$
$csc^4b-cot^4b=cot^2+csc^2b$
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