$3-7x\geq 4$
$\left(\frac{2}{5}a^2-\frac{25}{4}\right)^2$
$sin\:2x\:cos\:2x\:=\:\frac{1}{2}\:sin\:4x$
$cos\left(3y-1\right)\frac{dy}{dx}-sen\left(2x+7\right)=0$
$3-4\cdot5-7$
$\left(2^{36}\right)^n$
$6\sqrt{-\frac{1}{9}}$
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