<u>Answer:</u>

<u>Step-by-step explanation:</u>
We are given the following expression and we are to find its product:

Here, we need to recall the the product rule according to which the exponents are added when you multiply two powers that have the same base.
So here the powers of
and
will be added to their powers to give:
=
= 
Therefore, the product of the given expression is
.
Answer:
The value of 
Step-by-step explanation:
Being the general expression of the sequence:

We replace the value n=12 to get

Answer:
2
Step-by-step explanation:
When trying to find the LCM of two numbers you need to write down all possible ways to multiply any number used to get both 8 and 10. When doing that, the LCM is the smallest number out of both of them.
Answer:
-9, -8
Step-by-step explanation:
x+(x+1)=7+3(x+1)
x+x+1=7+3(x+1)
2x+1=7+3(x+1)
2x+1=7+3x+3
2x+1=3x+10
2x+1-1=3x+10-1
2x-3x=3x-3x+9
-1x/-1=9/-1
x=-9/-8