Question

Factorise (p-q)³-9(p-q)​

Answer 1

Answer:

(p-q)(p-q+3)(p-q-3)

Step-by-step explanation:

(p-q)³-9(p-q)

= (p-q)[(p-q)²-9]

= (p-q)[(p-q)²-(3)²]

= (p-q)(p-q+3)(p-q-3)

using formula

x³ = x*x*x

(p-q)³ = (p-q)*(p-q)*(p-q)

x²-y² = (x+y)(x-y)

Answer 2

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