$\int_{-\frac{\pi}{2}}^{\pi}cos^3\left(x\right)sen\left(x\right)dx$
$3x^2+4x-1=0$
$\left(8y\right)\left(-4y\right)$
$x^4+3x^3-10x^2$
$w^4+2w^2+9$
$12 - ( - 8 ) - ( - 3 ) - 5 - ( - 4 )$
$\left(\frac{5x-3}{2}\right)^2$
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