If x = (2+root 5)¹/² + (2 - root 5)¹/² and y = (2+root 5)¹/² - (2-root 5)¹/² then evaluate x² + y²
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Kappensam:
Brilliant!!
x2 + y2 = (x + y)2 - 2xy
U have used this identity ??
U have used this identity ??
yes
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please mark me as the brainliast
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