Question

factorise 49a6 -28a3b3 + 4b6​

Answer 1

Answer:

(7a^3 - 2b^3)^2

Step-by-step explanation:

49a^6 - 28a^3b^3 + 4b^6

= (7a^3)^2 - 2(7a^3)(2b^3) + (2b^3)^2     ... (looks like (a-b)^2 = a^2 - 2ab + b^2)

= (7a^3 - 2b^3)^2