Math, asked by narayandebdibakar737, 1 month ago

find the coefficient of x² in the expansion of (x-3)³

Answers

Answered by MallikaPerka

3

Answer:

9

Step-by-step explanation:

(x-3)³=x³+3³-3(3x)(3-x)

=x³+9-9x(3-x)

=x³+9-27x+9x²

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