$$\left(5x-2\right)\left(x+5\right)$$

$$\left(-2x+2\right)\left(4x-1\right)$$

$$\left(x^2+1\right)\left(x^2-1\right)$$

$$\left(x^2-6\right)\left(2x-9\right)$$

Multiplique los polinomios: $$\left(x-3\right)\left(x^2+5x+1\right)$$

$$\left(2x+1\right)\left(-x^2-x+4\right)$$

$$\left(x+3\right)\left(9x^2-6x+2\right)$$

$$\left(x^2-x\right)\left(x^3+x+1\right)$$

$$\left(x^3-4\right)\left(x^2+2x-1\right)$$