Question

Expand (3x-½x)³
please solve it and let me know​

Answer 1

Answer:

$\frac{216 {x}^{3} - 108 {x}^{2} + 18x - 1 }{8}$

Step-by-step explanation:

3x-1/2

therefore (a-b)³=a³-b³-3a²b+3ab²

therefore (3x)³-(½)³-3(9x²)(½)+3(3x)(½)²

27x³-⅛-27x²/2 + 9x/4

27x³-27x²/2 + 9x/4 - 1/8

LCM is 8

$\frac{216 {x}^{3} - 108 {x}^{2} + 18x - 1 }{8}$

Answer 2

Answer:

PLEASE MARK MY ANSWER AS BRAINLIEST

(3x)³ - (1/2x)³ - 3(3x)(1/2x)(3x - 1/2x)

27x³ - 1/8x³ - 9/2(3x-1/2)

27x³ - 1/8x³ - 27/2x + 9/4

PLEASE MARK MY ANSWER AS BRAINLIEST

Step-by-step explanation: