$30-7^4$
$\int_1^{+\infty}\left(\frac{4}{x\sqrt[2]{2x^2}-1}\right)dx$
$\int3x^2\cos x^3dx$
$f\left(x\right)=\left(x+1\right)\left(x+1-\frac{1}{x+2}\right)$
$x^2-x-200$
$-d+d^2$
$\:-81x\:+19y\:-30z\:+\:6y\:+80x\:+\:x\:-25y+7z\:$
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