Question

(3m-5) whole cube
expand
the first and correct
answer would be marked brainliest ​

Answer 1

Answer:

(3m-5)^3

= (3m)^3 - 3(3m)^2(5) + 3(3m)(5)^2 - 5^3

= (3m)^3 - 5^3 - 3(3m)(5){3m-5}

= 27m^3 - 125 - 45m{3m-5}

= 27m^3 - 125 - 135m^2 - 225m

Hope my answer is correct...