Q. 84.0( 9 Votes )

Factorise each of the following expressions:
(i) 48x3 - 36x2
(ii) 5x2 - 15xy
(iii) 15x3y2z - 25xy2z3

Answer :

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

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