Question

Cual es el producto notable de (x + 11)(x − 11)

Answer 1

(x + 11)(x − 11)

x (x− 11 ) + 11 ( x − 11 )

x ⋅ x + x ⋅ − 11 + 11( x − 11 )

x ⋅ x + x ⋅ − 11 +11x + 11 ⋅− 11

x ⋅ x − 11 x + 11 x + 11 ⋅ − 11

x ⋅ x + 0+ 11 ⋅ − 11

x ⋅ x + 11 ⋅ − 11

$x^{2}$ + 11 ⋅− 11

$x^{2}$ − 121