find the value of √x²+a² + √x²-a² / √x²+a² - √x²-a² when x²=a⁴+1 / 2
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Multiply the denominator term with both numerator and denominator
which becomes
solving what's inside the root
now it can come out of the root in two ways. either this
or
From 1st way
It depends on the value of a which will determine how that fraction will come out of the square root. since no value is given we must take account all possibilities.
Hope you have understood the solution.
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