Question

if value of x2+1/x2=34 then find the value of x2-1/x2... tip: value of x2+1/x2=6​

Answer 1

Answer:

± 6

Step-by-step explanation:

Given that;

x² + 1/x² =34

On adding 2 both sides ;

x²+ 1/x2 +2 = 34 + 2

x² +1/x2 + 2.x.1/x = 36

(x + 1/x)² = 36

x + 1/x = ±√36

x + 1/x = ±6

Hence, the answer is ±6.

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★ Identity Used -

(a + b)² = a² + 2ab + b²

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