The value of the 3 in 6300 os 300 and it is ten times as many as the 3 in 530
This is same as (4x-6)(2x), so you can distribute 2x into 4x-6 and you would get
(2x)4x - (2x)6 = 8x² - 12x
Final answer: 8x² - 12x
Hope this helps.
The answer is 48--- 64% of 75=48