$57.09-31,56$
$\left(4^7\right)^4$
$\int x\left(9x^3+8x^2-5x+4\right)dx$
$\int4t^2\left(t^3-2\right)^5dt$
$\frac{\cos\sec a+\sec a}{\sin a\:+cos\:a}$
$4+8-5+1-12+6$
$4x-8$
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