$$\int\frac{-2200x}{\sqrt{25-x^2}}dx$$

$$\frac{70.50}{3}$$

$$x^2+4x^2-21$$

$$\left(3x\left(4a-5\right)+2y\left(2a+1\right)\right)$$

$$\int3x\left(2x-1\right)^{\frac{1}{2}}dx$$

$$\sqrt{\frac{\sin^2\left(x\right)}{2\cos^2\left(x\right)}}$$

$$\int3ay^2dx$$