Question

evaluate (3x + 2y) ^3 ​

Answer 1

Step-by-step explanation:

$( {3x + 2y})^{3} \\ formula \: ( {a + b)}^{3} = {a}^{3} + {b}^{3} + 3ab(a + b) \\ = 27 {x}^{3} + 8 {y}^{3} + 3 \times 3x \times 2y(3x + 2y) \\ = 27 {x}^{3} + 8 {y}^{3} + 18xy(3x + 2y) \\ = 27 {x}^{3} + 8 {y}^{3} + 54 {x}^{2} y + 36x {y}^{2}$

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