$\frac{5^2-25}{5+5}$
$-14-x=20$
$\left(2a\right)^3\cdot\left(3a\right)^2$
$\int x\sinh\left(2x^2-5\right)dx$
$-90-125$
$\sqrt{2+3\sqrt{x+2}}=2\sqrt{5}$
$\cos\left(a+\frac{\pi}{2}\right)=-\sin\left(a\right)$
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