factorise x3p2-8y3p2-4x3q2+32y3q2
x3p2-8y3p2-4x3q2+32y3q2
= x3p2-4x3q2-8y3p2+32y3q2
= x3(p2-4q2)-8y3(p2-4q2)
=(p2-4q2)(x3-8y3)
factorise x3p2-8y3p2-4x3q2+32y3q2
x3p2-8y3p2-4x3q2+32y3q2
= x3p2-4x3q2-8y3p2+32y3q2
= x3(p2-4q2)-8y3(p2-4q2)
=(p2-4q2)(x3-8y3)