The Coefficient of x in (x + 3)³ is

Question:

The coefficient of \(x\) in \[ (x+3)^3 \] is

(a) 1

(b) 9

(c) 18

(d) 27

Solution:

\[ (x+3)^3 \]

\[ =x^3+3x^2(3)+3x(3)^2+3^3 \]

\[ =x^3+9x^2+27x+27 \]

The coefficient of \(x\) is

\[ \boxed{27} \]

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