Answer:
81x^4+216x^3+216x^2+96x+16
Step-by-step explanation:
The answer to the question is 5
If you do order of operations, you divide 6 and 2 getting 3. Add 42 and 3. 45 is the answer.
Answer: 
Step-by-step explanation:
The area of a rectangle can be found with the following formula:

Where "l" is the length and "w" is the width.
In this case you can identify in the figure given in the exercise that:

You know that the area of that rectangle is the following:

Therefore, knowing those values, you can substitute them into the formula and then you must solve for "x" in order to find its value. You get that this is:
