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21-02-2015
Mathematics

Answered

Square root of x^2-4 plus x^2/x^2+1

Answer :

Panoyin Panoyin

22-02-2015

√x² - 4 + x²/x² + 1
x - 2 + x²/x² + 1
x - 2 + x²
   1 x² + 1
(x - 2)(x² + 1) +   x²
(1)(x² + 1) x² + 1
x³ + x - 2x² - 2 +   x²
   x² + 1 x² + 1
x³ - 2x² + x² + x - 2
   x² + 1
x³ - x² + x - 2
   x² + 1
x³ + x - 2

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