$\sec\left(x\right)^2+\tan\left(x\right)^2+1=2\frac{2}{\cos\left(x\right)}$
$x^2-2x+35$
$3z+2\left(\left(-5z\right)\right)+6$
$8x^7+3x^7$
$\left(2x+1\right)^2-\left(x-1\right)^2$
$20x^2+20g^2$
$\sqrt[3]{25a^2}$
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