$\int\frac{6x}{1+x^4+2x^2}dx$
$-2=-13$
$\left(a^{n+1}b-i^{2n}\right)\left(a^{n+1}b+i^{2n}\right)$
$2m^2-14m+20$
$\ln\left(\left(\frac{a}{b}\right)^c\right)$
$\left(2x^2\right)\left(3x^3\right)\left(4x\right)^2$
$-21.42\cdot1.3$
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