Please solve this sum. A little fast as I have exams at my school tomorrow.
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X + 1/4 = 9?
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assuming x + 1/x =9
square both sides,
x²+1/x²+2=81
x²+1/x²= 79
now square again,
x⁴+ 1/x⁴ +2 = 79²
x⁴ +1/x⁴= 79²-2
you can calculate the rest. even if i used wrong values, try to understand the approach and you will be able to solve it. you just have to use the algebraic identities.
square both sides,
x²+1/x²+2=81
x²+1/x²= 79
now square again,
x⁴+ 1/x⁴ +2 = 79²
x⁴ +1/x⁴= 79²-2
you can calculate the rest. even if i used wrong values, try to understand the approach and you will be able to solve it. you just have to use the algebraic identities.
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