Find the 2

Find the term independent of x in the expansion of (4x3+1/2x)8

Correct result:

x =  7

Solution:

P=(4x3+12x)8 X=(4x3 1/(2x) 1/(2x) 1/(2x))2 X=(4 1/2 1/2 1/2)2=14=0.25  C2(8)=(82)=8!2!(82)!=8721=28  x=(82) X=28 0.25=7



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