Factor the following:
1. x2+11x+30
2. x2+22+121
3. x2+x−30
4. x2−7x−18

a) (x+6)(x+5)

b) (x+11)(x+11)

c) (x-6)(x+5)

d) (x-9)(x+2)

Step-by-step explanation:

im assuming its written like this:

a) (x+6)(x+5)

b) (x+11)(x+11)

c) (x-6)(x+5)

d) (x-9)(x+2)

hope this helps, to double check use foil

you need a common difference between consecutive terms to be constant, like 1,2,3,4 or 2,4,6,8, or 1,3,6,9