Question

If 2x + = = 5, then find the value of x? + х 4x2:
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Answer 1

Answer:

Given equation 3x+1/(2x)=5 can be written as (3/2)(2x+1/(3x))=5 i.e 2x+1/(3x)=10/3.Cubingboth sides we get 8x^3+4x+2/(3x)+1/27x^3=1000/27.

8x^3+1/27x^3+2(2x+1/(3x))=1000/27

8x^3+1/27x^3+20/3=1000/27

8x^3+1/27x^3=820/27.

Hope this works…