$sin\left(a+b\right)cos\left(b\right)-cos\left(a+b\right)sin\left(b\right)$
$x^2+y^2-1=0$
$a-b=80$
$b^2-64=0$
$\left(4\sqrt{3-4a}\right)^5$
$\left(\left(2^4\right)\right)^2$
$8x^3+1$
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