Question

in the expansion of (2x-3)^3 the coefficient of x is​

Answer 1

Ans: 6

Step-by-step explanation:

(2x-3)^3 = 6x-9

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Answer 2

Answer:

The answer is 54

Step-by-step explanation:

  $(2x-3)^3$

$=(2x)^3-(3)^3-3(2x)(3)(2x-3)$, using $(a-b)^3=a^2-b^3-3ab(a-b)$

$=8x^3-9-18x(2x-3)\\=8x^3-9-36x^2+54x\\=8x^3-36x^2+54x-9$

So clearly coefficient of $x$ is 54