Your answer will be A, 20 hours to take the crew to complete a building with 200 windows
X=3 because 21 divided by 7 is 3
Answer:
3u(u - 2)
Step-by-step explanation:
greatest common factor: 3u (both are divisible by 3, and include the variable u)
factor: 3u^2/3u = u; -6u/3u = 2
new polynomial: 3u(u - 2)
Answer: 462
Step-by-step explanation: