Question

(7t-5n)³ - 7t+5n³ - simplify ​

Answer 1

Answer:

using the identity (x)^3-(y)^3= (x-y)(x^2+xy+y^2)

(7t-5n-7t-5n)(49t^2+25n^2-70t+49t^2+25n^2+70t+49t^2-25n^2)

(-10n)(147t^2+25n^2)

-1470t^2n-250n^3