$x\left(x+1\right)^7$
$36x^2-48xy+16y^2$
$5\left(2\right)+6+7$
$25=5^{x-4}$
$\int2\sec^26xdx$
$78 \cdot 4 + 18 - ( - 2 ) 11$
$3x-7y-4z-5z+4y-7x$
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