Answer:18
Step-by-step explanation:
Just count the square
4 • (2a + 3) • (2a - 3)
(1): "a2" was replaced by "a^2".
24a2 - 36
3.1 Pull out like factors :
16a2 - 36 = 4 • (4a2 - 9)
3.2 Factoring: 4a2 - 9
3a+b+a+b = (3a+a) + (b+b) = 4a + 2b
Answer:
13.6% decrease
Step-by-step explanation:
original price = 3.499
new price = 3.079
percent change formula = (new - original) / original
= (3.499 - 3.079) / 3.079
= 0.42 / 3.079
= 0.13641
= 13.6%
11 (70-25=45, 45divided by 4=11
