It D machinery. It says it on the bottom of the problem but for further explanation, a mail room can be found in some but it’s more in offices than factories, a barn is obviously wrong, and cafeteria is only in some not all but all factories have machinery used to make the item they produce.
56x² - 49x + 14 = 7(8x² - 7x +2)
_____
The greatest common factor of 56, 49, and 14 is 7.
What we are going to do is use the DISTRIBUTIVE PROPERTY. This distributive the numbers, to make it easier to solve.
So we will break 64 up.
64 = 60 + 4
43 = 40 + 3
60 + 40 = 100
4 + 3 = 7
100 + 7 = 107
So, 64 + 43 = 107.
Hope I helped ya!!!!!!!