\(\left(2x+\dfrac{1}{2}\right)^3=8x^3+6x^2+\dfrac{3}{2}x+\dfrac{1}{8}\)
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\(\left(2x+\dfrac{1}{2}\right)^3\)
= 8x3 + 3.4x2.\(\dfrac{1}{2}\) + 3.2x.\(\dfrac{1}{4}\) + \(\dfrac{1}{8}\)
= 8x3 + 6x2 + \(\dfrac{3}{2}\)x + \(\dfrac{1}{8}\)
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