Question

Multiply: (x – 4)(x + 5)

Answer 1

“x^2+x-20”

Here’s your final answer my friend. Simply used the 4th identity.

Answer 2

Answer:

x^2+x-20

Step-by-step explanation:

(x-4)(x-5)

x(x+5)-4(x+5)

x^2+5x-4x-20

x^2+x-20