Question

expand (3m-4)³
pls solve it on a paper and send me the pic because I have to solve it .its very urgent send me the steps and explanation. pls​

Answer 1

Answer:

(3m-4)³ = 27m³ - 108m² + 144m - 64

Step-by-step explanation:

As we know that:-

(a-b)³ = a³ - 3a²b + 3ab² - b³

.

.

(3m-4)³ = (3m)³ - 3(3m)²•(4) + 3(3m)•(4)² - (4)³

.

(3m-4)³ = 27m³ - 3(9m²)•(4) + 3(3m)•(16) - 64

.

(3m-4)³ = 27m³ - 108m² + 144m - 64 (ans)