What do you mean exactly? I will help you if you provide more information.
Perimeter is the sum of all three sides so in this case x+(3x+2)+(3x+2).
They also gave us the perimeter which is 39 so
39= x+(3x+2)+(3x+2)
Simplify so 39=7x+4. [x+3x+3x=7x and 2+2=4]
Then get x by itself so subtract 4 from both sides.
35=7x
Then divide both sides by 7 to get x by itself.
Which leaves us with
X=5
Out of numbers: 5, 7, 21, 25, 28, 35, 42, 56, 75, and 80, choose those which are not factors of 42
Blizzard [7]
Answer:
5, 25, 28, 35, 56, 75 80 are not the factors of 42
Option B
<u>ANSWER: </u>
The factors of
is 
<u>SOLUTION:
</u>
Given, cubic expression is 
Now, we have to find the factors of above equation.
To factorize the given equation, follow the below steps:

Since x is common in every term of expression, we can take it as common

“2x” can be rewritten as “x + x”, the above equation becomes,

Taking the common terms out of bracket. we get
x(x (x + 1) + 1 (x + 1))
Taking (x + 1) as common., we get
x ((x + 1)(x + 1))

Hence, the second option b is correct.
C
The correct answer is c I am pretty sure