Answer:
associative property
Step-by-step explanation:
it gives the same answer
Answer:

Step-by-step explanation:
We start by applying the difference of squares to the expression:

Now we apply the square of a binomial to the first term:

So the answer is:

The angle of X' would still be 40 degrees because you didnt change the length of any of the sides
The slope of the line of the equation given is -2 (by solving for y, you get y = -2x+4).
So, in order to be perpendicular, you must take the negative reciprocal.
The slope would be -1/2.