$\left(-3\right)^2x\:\left(-3\right)^3$
$-13tan\left(x\right)=0$
$10^6\cdot10^3$
$\left(x+5\right)^2=x^2+5x+25$
$\cos^2u\left(1+\tan^2u\right)=1$
$p^2-3p-18\left(p^2-9\right)$
$p^4-625=0$
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