Question

Find the product by using suitable identity: (x+5) (x+4)

Answer 1

Step-by-step explanation:

$(x + 5)(x + 4) \\ = x(x + 4) + 5(x + 4) \\ = {x}^{2} + 4x + 5x + 20 \\ = {x}^{2} + 9x + 20$

here is the answer

hope this helps u

Answer 2

Answer:

2x + 9

x= 9/2

I am not sure about the identity but i think identity 1