Question

factorise:
$4(p + q)(3a - b) + 6(p + q)(2b - 3a)$
​

Answer 1

Step-by-step explanation:

(i) ab² -bc² - ab + c²

= b(ab -c²) -1 (ab -c²)

= (b-1)(ab-c²)

(ii) axy + bcxy - az - bcz

= xy(a+ bc) -z(a+bc)

= (xy -z)(a+bc)