$\frac{1}{4}-\frac{x^2}{64}$
$t i n ( t + 1 )$
$\ln\left(9x+7\right)-\ln\left(x\right)=\ln\left(10\right)$
$3m+2m-5n+4m$
$2x\left(x+y+z\right)-x-y-z$
$6\left(4+3\right)$
$2-1-3+2+5-3$
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