Question

factorise 1331 x³ - 343 y³​

Answer 1

Step-by-step explanation:

1331x^2-343y^3

(11x)^3-(7y)^3

this implies (11x-7y){(11x)^2+(7y)^2+11x×7y}

(11x-7y)(121x^2+49y^2+77xy)