$x^2-5x+7x-35$
$\int\left(sen^2\:\pi\:x\:cos^4\pi\:x\right)dx$
$\left(\frac{x^4}{2}-\frac{1}{2x^2}\right)^2$
$\frac{\left(-4^n\right)}{\sqrt{n}}\left(x+1\right)^n$
$47y^2+35y^2+22y^2$
$\lim_{x\to\infty}\left(1+\frac{3.3}{x}\right)^x$
$1a+22a+121$
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