$\sin\left(x\right)^4-\cos\left(x\right)^4=\cos\left(2x\right)$
$\int_0^{\infty}\left(\frac{1}{1+x^2}-\frac{4}{3x+1}\right)dx$
$x\:+\:x\:+\:x\:+\:x$
$-3+3w=w-9$
$-10+15+34+-28+60$
$\frac{sin^2t}{\cos\left(t\right)}-\sec\left(t\right)-\cos\left(t\right)$
$\sec\left(47\right)^2-\tan\left(47\right)^2$
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