$336+943$
$10\left(4x+9\right)$
$3a+9^2$
$457.03+560.8+48.37$
$20-2a\cdot30-2a\cdot20\cdot30-2a\cdot2a$
$\left(2n-5x\right)^{\left(3\right)}$
$\frac{\left(1-sin^2a\right)}{2cosa}$
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