$4^2+12^1$
$-4.2+3-3.14+2.25$
$42a^{2}-6a^{2}b-5bc^{2}+35c^{2}$
$\frac{\int\cos\left(x\right)-\sin\left(x\right)}{\cos\left(x\right)}dx$
$\frac{dy}{dx}=y-y^2x^3$
$2+\frac{w}{4}=30$
$\int\frac{4x+5}{x^2+4x+20}dx$
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