x^2+7x-30 = (x-3)(x+10)
42
30 + 30 + 30 + 30 + 30 + 30 = 180
12: 1, 2, 3, 4, 6, 12 30: 1, 2, 3, 5, 6, 10, 15, 30 12 + 30 = 42 42: 1, 2, 3, 6, 7, 14, 21, 42 12x + 30 = 6(2x + 5) 12 + 30x = 6(5x + 2)
4!
-30 plus 60 = 30
90
The sum of these numbers is 563.
50 + 40 + 40 + 40 + 30 + 30 + 20 + 10 = 260
The answer depends on what you want to factorise: 30, 303 (Oct 30 is the 303th day of the year), 41942 (days since 31 December 1899 = Excel day count).
you factor out the common 5so it would be: 5(x + 2)so that when you multiply back out 5 by x you get 5x and 5 by 2 you get 10
194