The first has 60 and the other question is associtation
Answer:
(n+5)² - (n+3)² =
= (n² + 10n + 25) - (n² + 6n + 9)
= n² + 10n + 25 - n² - 6n - 9
= 4n + 16
= 4(n + 4) ⋮ 4
Answer:
x=1
Step-by-step explanation:
6(5x - 3) + 2 = 14
Subtract 2 from each side
6(5x - 3) + 2-2 = 14-2
6(5x - 3) = 12
Divide each side by 6
6(5x - 3) /6 = 12/6
5x-3 = 2
Add 3 to each side
5x-3+3 = 2+4
5x=5
Divide each side by 5
5x/5 = 5/5
x = 1
