Factorise a2b – ab2 + 3a – 3b

(i) a²b – ab² + 3a – 3b

(ii) x³ – 3x² + x – 3

Answer :

(i) a²b – ab² + 3a – 3b

Take out common in all terms,

ab(a – b) + 3(a – b)

(a – b) (ab + 3)

(ii) x³ – 3x² + x – 3

x³ – 3x² + x – 3

Take out common in all terms,

x² (x – 3) + 1(x – 3)

(x – 3) (x² + 1)

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