Question

Write in the expanded form:
${( \frac{1}{3} a - \frac{2}{3} b)}^{3}$
​

Answer 1

Answer:

$\frac{1}{27} ( {a}^{3} - 8 {a}^{3} + 12a {b}^{2} - 6 {a}^{2} b)$

Explanation:-

$\frac{1}{27} {a}^{3} - \frac{8}{27} {b}^{3} + \frac{12}{27} a {b}^{2} - \frac{6}{27} {a}^{2} b$

$\frac{1}{27} ( {a}^{3} - 8 {b}^{3} + 12a {b}^{2} - 6 {a}^{2} b)$