$x^2+10x+50=50$
$\left(\cos^2-1\right)\left(\tan^2+1\right)=1.\sec^2$
$3^{12}\sqrt{64}$
$\cos\left(7x\right)=\sin\left(\frac{\pi}{2}-7x\right)$
$\frac{cos\left(2t\right)-1}{sin\left(2t\right)}$
$x^6y^9-125x^3y^6$
$\frac{dy}{dx}\sqrt{1-x^2}=xy$
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