$$75^2$$

$$x^3+28y^3+3xy\left(x+y\right)$$

$$\frac{\left(x+5\right)}{3}\ge\frac{\left(4-2x\right)}{-5}$$

$$2x^2+11x+40$$

$$2x-8\ge7x-16$$

$$\left(-35\right).\left(11\right)$$

$$\int\frac{x^4+5x^3+20x+16}{x\left(x^2+4\right)^2}dx$$