$3x+bx^2+x^3y\left(-2\right)=-6$
$sin\left(80\right)cos\left(20\right)-cos\left(80\right)sin\left(20\right)$
$\left(x^5+3\right)^4$
$\frac{3}{3}\cdot2$
$11^3$
$-2\cos\beta+14=12$
$\int\frac{2x}{x^2-3x-18}dx$
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