Answer 1
steps. first of record and gather like terms (-2xy^2+6xy^2)-4xy
next collect coefficient like terms (-2+6)x Xy^2-4xy
then calculate the sum or difference 4xy^2-4xy
Answer:

Step-by-step explanation:
From the diagram:

Now Angle 1 and Angle 2 are on a straight line, therefore:

Answer:
7x(-9)
Step-by-step explanation:
-3x-5 becomes positive 15
-2x-1 becomes positive 2
6x6 is 36
7x-9 is -63
Answer:

Step-by-step explanation:
The graph is in the image

The way is see the problem causes the answer to be 27x<span />