1) 3a - 3b + c(a - b) = 3(a - b) + c(a - b) = (3 + c)(a - b)
2) a^3 - a^2 - 25a + 25 = a^2(a - 1) - 25(a - 1) = (a^2 - 25)(a - 1) = (a + 5)(a - 5)(a - 1)
3) 36b^2 - (b - 6)^2 = 36b^2 - (b^2 - 12b + 36) = 36b^2 - b^2 + 12b - 36 = 35b^2 + 12b - 36
1) 3a - 3b + c(a - b) = 3(a - b) + c(a - b) = (3 + c)(a - b)
2) a^3 - a^2 - 25a + 25 = a^2(a - 1) - 25(a - 1) = (a^2 - 25)(a - 1) = (a + 5)(a - 5)(a - 1)
3) 36b^2 - (b - 6)^2 = 36b^2 - (b^2 - 12b + 36) = 36b^2 - b^2 + 12b - 36 = 35b^2 + 12b - 36