In expansion of ( 2x -3) ³ , the coefficient of x is . ... Help me as fast you all can ... &give proper answer to me
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Given:
( 2x -3) ³
To find:
The coefficient of x
Solution:
We have given the polynomial equation where the degree of the equation is 3, so the given polynomial is a cubic equation.
We have the direct formula to get the expanded form of the given equation;
(a-b)³ = a³-b³-3a²b+3ab²
expand the given equation by using this formula;
(2x-3)³
(2x)³-3³-3×(2x)²×3+3×(2x)×3²
8x³ - 27 - 36x² + 54x
from the above-expanded form of the equation,
the coefficient of the x is 54
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