Question

(x+2y)³ expanded form​

Answer 1

Answer:

x³+2y³

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Answer 2

Answer:

$(x + y) {}^{3} = {x}^{3} + {y}^{3} + 3xy(x + y) \\ (x + 2y {)}^{3} = {x}^{3} + (2y {)}^{3 } + 3 \times x \times 2y(x + 2y) \\ = {x}^{3} + {8y}^{3} + 6xy(x + 2y) \\ = {x}^{3} + 8 {y}^{3} + 6 {x}^{2} y + 12x {y}^{2}$