dydx=1−y2xy−1+x−y\frac{dy}{dx}=\frac{1-y^2}{xy-1+x-y}dxdy=xy−1+x−y1−y2
y′+y=20ty'+y=20ty′+y=20t
(5m−9)(2m−1)\left(5m-9\right)\left(2m-1\right)(5m−9)(2m−1)
f(x)=x2+8xf\left(x\right)=x^2+8xf(x)=x2+8x
5sin(x)−cos(2x)−2=05\sin\left(x\right)-\cos\left(2x\right)-2=05sin(x)−cos(2x)−2=0
5x+6 ⋅5x+65x+6\:\cdot5x+65x+6⋅5x+6
x210x+nx^210x+nx210x+n
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