Question

(x+5) (x+4) = how to answer this​

Answer 1

Answer:

x^2+9x+20

Step-by-step explanation:

when you multiply them , you get

(x+5)(x+4)= x^2 + 4x+5x+20= x^2 +9x+20

Answer 2

Answer:

You can solve this by (x + a) (x + b) formula.

Step-by-step explanation:

(x + a) (x + b) = x^2 + (a + b)x + ab

In this question, a= 5 and b= 4

(x + 5) (x + 4) = x^2 + (5 + 4)x + 5 multiplied by 4

= x^2  + 9x + 20

Hope this is helpful...