$\left(4y+5\right)\left(4y-8\right)$
$\left(x^2+x+3\right)^2$
$36+-1+4$
$3f^2-27f$
$5\cdot10^3$
$\left[\left(a+2\right)^2-2a\right]^2$
$x-2\:\:\sqrt{7z^2+14-7}$
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