Question

The coefficient of x in the expansion of (x+3)^3 is

Answer 1

Answer:

${(x + 3)}^{3} = \\ {x}^{3 } + 27 + 3x(x + 3) = \\ {x}^{3} + 27 + 3 {x}^{2} + 9x \\ coefficient \: of \: x \: is \: 9$