Question

6.
Write the following cubes in expanded form:

(ii) (2a - 3b)^3
​

Answer 1

Answer:

${(x - y)}^{3} = {x}^{3} - {y}^{3} - \: 3 {x}^{2} y + 3x {y}^{2}$

${(2a - 3b)}^{3} = {(2a)}^{3} - {(3b)}^{3} - 3 {(2a)}^{2} (3b) + 3(2a)( {3b)}^{2}$

$= 8 {a}^{3} - 27 {b}^{3} - 36 {a}^{2} b + 54a {b}^{2}$

Step-by-step explanation:

Hope it helps you out.......

Answer 2

Answer:

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