$\int_0^{\pi}\sin^4\left(3t\right)dt$
$30k^2+9k-54$
$x^6=-27$
$\lim_{x\to0}\left(\frac{xlnx^2}{e^x}\right)$
$x^2+24x+145$
$-4x^2-48x-80=0$
$-\left(-6+8-8-9\right)+\left(-5+8-7+3\right)-8+3$
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