$-\frac{5}{4}a^2+\frac{1}{2}a^2-3a^2+-\frac{3}{2}ab+5ab-\frac{1}{2}ab$
$\int v\cdot sen^2\left(3v\right)dv$
$\frac{30x^{5}\cdot11x^{4}+12x^{3}+52x^{2}+x-12}{5x+4}$
$\left(4-x^2\right)^2\left(x^3+6\right)$
$- 1 - [ - 3 - 2 + ( - 4 ) ]$
$\left(2x+3\right)\left(4x-5\right)$
$32^2+16\left(32\right)$
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