Factories:
(i) 12x + 15
(ii) 14m – 21
(iii) 9n – 12n2
(i) 12x + 15
Taking 3 as common from the whole, we get,
12x + 15 = 3(4x + 5).
(ii) 14m – 21,
Taking 7 as common from the whole, we get,
14m – 21 = 7(2m – 3)
(iii) 9n – 12n2,
Taking 3n as common from the whole, we get,
9n – 12n2 = 3n (3 – 4n).