$$36x^2-27$$

$$2x^2+10x-48=0$$

$$9x^2-5x=0$$

$$\frac{\sec\left(x\right)\cot\left(x\right)}{2\sin^2\left(x\right)+2\cos^2\left(x\right)}$$

$$2b^2-b^2+5+9b^2-2b^2$$

$$a^2-9b^2$$

$$\int\frac{\left(x-1\right)}{\left(x^3+2x^2+2x\right)}dx$$