using properties of proportion solve for x, given x is positive 2x+√(4x²-1)/2x-√(4x²-1)=4
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Answer:
5/8 is the answer
Step-by-step explanation:
ANSWER
Given expression is
2x+√4x2-1/2x-√4x2−1=4
We use componendo and dividendo in above expression, we get
(2x+√4x2−1+2x− √4x2−1)/(2x+√4x2−1)-(2x−√4x2−1)=4
2x/√4x-1=4+1/4-1=5/3
Squaring and rearranging, we get:
4x 2×9=5(4x 2−1)
⇒36x2
=100x2−25
⇒x=± 5/8
Choosing the positive value of x we get x= 5/8
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