plz solve it step by step
i want to understand it
(5.5)^3-(4.5)^3
(5.5)^3 - (4.5)^3
We have a difference of cubes.........we can simplify this as follows
(5.5 - 4.5) ( 5.5^2 + 5.5*4.5 + 4.5^2 ) =
( 1) ( 30.25 + 24.75 + 20.25) =
(1) ( 75.25) =
75.25
