Answer :
√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
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
