Answer:
(x+11)(x-11)
Step-by-step explanation:
A ^2 - B ^2 =(A+B) (A-B).. (*)
x^2 - 121=
x^2 - 11^2=(*)
(x+11)(x-11)
(B) x = 40
Step-by-step explanation:
4x + 20 = 180
4x = 160
x = 40
We are asked to sum the two trinomials

. We can start by using the distributive property to remove the parenthesis, giving us

. Next, when we combine like terms, we get

. Hope this helped!
Answer:
y+3= -6(x+9) is the answer
Step-by-step explanation: