$\frac{dy}{dx}=3x^2e^{-y},y\left(0\right)=1$

$\left(\sin\left(x\right)-\cos\left(x\right)\right)\cdot\tan\left(x\right)=\tan\left(x\right)-2\sin\left(x\right)^2$

$\frac{6x-5}{3x^2+4x+1}$

$\left(1+a^3\right)\left(1+a\right)$

$\left(4x-5\right)\left(3x-2\right)=\left(3x-2\right)^2$

$a4x^2-20ax+25a$

$9x^4-6x^2+1$