How do you multiply:

(x + 11)(x – 11)

(x + 11)(x – 11)

Use the foil method:

(x + 11)(x - 11)

= x(x) + x(-11) + 11(x) + 11(-11) {used foil method}

= x2- 11x + 11x - 121 {multiplied through}

= x2- 121 {combined like terms}

- Algebra House

(x + 11)(x - 11)

= x(x) + x(-11) + 11(x) + 11(-11) {used foil method}

= x2- 11x + 11x - 121 {multiplied through}

= x2- 121 {combined like terms}

- Algebra House