$\left(y-yx^2\right)y'=y^2+2y+1$

$x^3+8x^2+19x+12$

$\sqrt{200.5^2-199.5^2}$

$\left(7a^3-5\right)^2$

$\frac{1}{sin\left(x\right)}+\frac{1}{cos\left(x\right)}=\left(cos\left(x\right)+sin\left(x\right)\right)\left(sec\left(x\right)\right)\left(csc\left(x\right)\right)$

$x^{-6}y^{12}\cdot2y^9$

$\left(-2x+-2y\right)^2$