Question

.If x⁴ +1/x⁴=194, find the value of x +1/x




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Answer 1

Step-by-step explanation:

(x²+1/x²)²=194+2(2ab[beacuse (a+b)²=a²+b²+2ab] is added to the lhs so it is added back the rha)

x²+1/x²=√196=14

(x+1/x)²=14+2

x+1/x=√16=4