$$54.3=\frac{2x^2}{\left(0.15-x\right)\left(0.09-x\right)}$$

$$2x^{\frac{1}{2}}-\left(2y\right)^{\frac{1}{2}}$$

$$\frac{6^{-2}a^3b^{-2}}{\left(36a^2b^{-1}\right)-1}.\frac{2a^{-3}b^2}{3ab}$$

$$-5,29\cdot2,9$$

$$\left(-7a+8\right)+\left(a-4\right)$$

$$\frac{dy}{dx}=\left(\left(2x+3\right)\left(y-1\right)\right)$$

$$2m+1n$$