Since the 3 of them are like terms, we have to ADD all 3 of them.
4x+2x+7x= 13x
<em>The question is not clearly readable, but I'm assuming the expression which makes more sense, so you can have a clue</em>
Answer:

Step-by-step explanation:
<u>Powers of The Imaginary Unit</u>
The imaginary unit i is defined as
The first powers of i are





And so on the cycle repeats every four numbers. To find the value of
we can find the remainder of 96/4=0. So 
The given expression is

Factoring

Since 

The required value is 0
Answer:
5 times 3 =15lb
Step-by-step explanation:
Answer is c just in place of x subst x values and your y will come out