$\int x^{-\frac{7}{3}}dx$
$\sqrt{x+1-\sqrt{x}}=\sqrt{x}$
$\left(1-a\right)^4$
$4x-2\le22$
$( - 5 ) ^ { 4 } - ( 12 - 8 ) + 20 - 4 + 5$
$2\cdot\sin^2\left(c\right)+\sin\left(c\right)=0$
$\frac{2\sin\left(a\right)^2}{cos\left(a\right)^2}$
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