Question

Q2.The coefficient of x in the expansion of (x+3)power3
is​

Answer 1

Answer:

1 is the coefficient of x

Answer 2

$Expansion \: of \: (x+3)^{3} \\= x^{3} + 3\times x^{2} \times 3 + 3 \times x \times 3^{2} + 3^{3}$

/* ____________

By Algebraic Identity :

$\boxed { \pink { (a+b)^{3} = a^{3} + 3a^{2}b+3ab^{2}+b^{3} }}$

____________*/

$= x^{3} + 9x^{2} + \blue {27}x + 27$

$Now, \orange { Coefficient \:of \: x \: in \:the }\\\orange { expansion \: of \: (x+3)^{2} } \green {= 27}$

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