$20x^2-20x+25$
$\csc\left(x\right)\cot\left(x\right)-\sin\left(x\right)\tan\left(x\right)=\cos\left(x\right)$
$\left(\frac{8}{6}\right)^{-4}\cdot4$
$\left(2a+b\right)x+16$
$a^4-10a^2+25$
$y=\ln\frac{9}{\left|4-3x\right|}$
$\left(6ab-4a\right)^3$
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