Factorise each of the following expressions: (i) 48x 3 - 36x 2 (ii) 5x 2 - 15xy (iii) 15x 3 y 2 z - 25xy 2 z 3

Question

Philoid · Accepted Answer

(i) 48x³ - 36x²
= 12.4.x^2.x - 12.3.x²
= 12x²(4x - 3)
(ii) 5x² - 15xy = 5x(x - 3y)
(iii) 15x³y²z - 25xy²z³ = 5xy²z (3x² - 5z²)