Answer:
-5, -8, -11
Step-by-step explanation:
Common difference:

The verbal expression is "<em>Four enn-cubed plus six</em>."
We have a pair of vertical angles here. So they would equal each other.
3x+50=6x-10
Subtract 3x to 6x:
50=3x-10
Add 10 to 50:
60=3x
Divide 3 to both sides:
x=30
The length of the pool is 8 meters. The width of the pool is 3 meters.