Question

please whoever answers first will get brainliest answer​

Answer 1

(4x)^3 - (5y)^3

identity = a^3 - b^3 = (a-b) (a^2 +ab + b^2)

(4x - 5y) (16x^2 + xy + 25y^2) [(4x-5y)^2 = 16^2

16× (536+12 16x^2 +25y^2 -40xy = 256, xy = 12

16x^2 +25y^2 =256 + 280 , 16x^2 +25y^2=536

16× 548

=8768