$2\left(\sqrt{20x}\right)\left(2\right)$
$\left(2x-3x^2+2x-1\right)+\left(x-1\right)$
$-18143+444$
$sinh\left(x-y\right)\:=\:sinh\left(x\right)cosh\left(y\right)\:-\:cosh\left(x\right)sinh\left(y\right)$
$3x-2=6+x$
$\sqrt{\left(4\right)-1}$
$9p^2-56p+16$
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