a=6-√35then value of a²-1/a²
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a = 6 -√35
1/a = 1/(6 -√35 ) = 6 + √35
now,
a² - 1/a² = (6-√35)² -(6+√35)²
= -2(12√35)
=-24√35
1/a = 1/(6 -√35 ) = 6 + √35
now,
a² - 1/a² = (6-√35)² -(6+√35)²
= -2(12√35)
=-24√35
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