Question

factorise:- a(b-c)(b+c)-d(c-d)

Answer 1

Step-by-step explanation:

a(b-c) (b+c)-d(c-d)

(ab-ac) (ab+ac)-dc+d^2

a^2b^2+a^2bc-a^2bc-a^2c^2-dc+d^2

a^2b^2-a^2c^2-dc+d^2

a^2(b^2-c^2)-d(c-d)