Question

Q2.Factorise the following expressions.
(a) 54m3n + 81m4n2
(b) 15x2y3z + 25x3y2z + 35x2y2z2

Answer 1

Answer:

(a) 54m3n + 81m4n2

= 2 × 3 × 3 × 3 × m × m × m × n + 3 × 3 × 3 × 3 × m × m × m × m × n × n

= 3 × 3 × 3 × m × m × m × n × (2 + 3 mn)

= 27m3n (2 + 3mn)

(b) 15x2y3z + 25 x3y2z + 35x2y2z2 = 5x2y2z ( 3y + 5x + 7)

Step-by-step explanation:

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