Question

factorise it maths question ​

Answer 1

Answer:

1. (4a)^3+(5b)^3+ 3×((4a)^2)×(5b) + 3×(4a)×((5b)^2)

= (4a+5b)^3

= (4a+5b)×(4a+5b)×(4a+5b)

2. x^3- 12x(x-4)-64

= x^3-12x^2+48x-64

= x^3+3×(x^2)×(-4)+3×x×((-4)^2) -(4^3)

= (x-4)^3

= (x-4)(x-4)(x-4)