Question

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

Answer 1

$(a - b)^3 = a^3 -3 a^2\ b + 3 a\ b^2 - b^3$

Here the coefficient of the term with a^1 is the third term.  Same way, the coefficient of x in the expansion of (2 x -3)³ is obtained.  The term with x¹ is :

$+ 3\ (2 x) 3^2 = 3 * 2 * 9 x$

The co-efficient is 54

Answer 2

Step-by-step explanation:

hope this helps u........