Question

$(x + 3) {3}$
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Answer 1

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(x + 3)³ = x³ + 3(x)²(3) + 3(x)(3)² + (3)³

............. = x³ + 9x² + 27x + 27

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Answer 2

Answer:

$(x + 3 {)}^{3} \\ \: \: \: \: \: \: \: \: \: \: using \: \: this \: \: identity \\ (x + y {)}^{3} = {x}^{3} + {y}^{3} + 3xy(x + y) \\ (x + 3 {)}^{3} = {x}^{3} + {3}^{3} + 3 \times x \times 3(x + 3) \\ = {x}^{3} + 27 + 9x(x + 3) \\ = {x}^{3} + 27 + 9 {x}^{2} + 27x \\ = {x}^{3} + 9 {x}^{2} + 27x + 27$

I hope it will help you