Solve 20(x-1)(x+1)

$$20 ( x - 1 ) ( x + 1 )$$

Evaluate

$$20\left(x^{2}-1\right)$$

Solution Steps

Use the distributive property to multiply 20 by x-1.

$$\left(20x-20\right)\left(x+1\right)$$

Apply the distributive property by multiplying each term of 20x-20 by each term of x+1.

$$20x^{2}+20x-20x-20$$

Combine 20x and -20x to get 0.

$$20x^{2}-20$$

Expand

$$20x^{2}-20$$

Solution Steps

Use the distributive property to multiply 20 by x-1.

$$\left(20x-20\right)\left(x+1\right)$$

Apply the distributive property by multiplying each term of 20x-20 by each term of x+1.

$$20x^{2}+20x-20x-20$$

Combine 20x and -20x to get 0.

$$20x^{2}-20$$