Question

Factorise : 8 − 27^3 − 36 + 54^2 rellay urgent plese hepl

Answer 1

Answer:

Notice that 8x3=(2x)3 and −27=(− 3)3 , so is the answer (2x−3)3 ? Multiply out (2x−3) 3 and find that it is. 8x3−36x2+54x−27=(2x−3)3 ...