Answer:
a)x²y²+2xy²z+y²z²-2x²y²z²
b) -8
Step-by-step explanation:
foil the squared to get:x²y²+2xy²z+y²z²
and then plug in the numbers and chug along
hope this helps
It's increasing cause it's going higher if it's decreasing it's going lower
Answer:
an hour
Step-by-step explanation:
80 divided by 80... 1.
The equation is y=2.5x.
Let the y axes increase by 2.5 and the x axes by ones
