Question

If x- 1/x = 12,then x² +1/x² = ?

Answer 1

Answer:

x² + 1/x² = 146

Step-by-step explanation:

Given that,

x- 1/x=12

now, squaring on both sides

(x- 1/x)² = (12)²

⇒x²+(1/x)²-2(x)(1/x) = 144            (∵(a-b)²=a²+b²-2ab )

⇒x²+ 1/x²-2 = 144

⇒x² + 1/x² = 144+2

⇒x² +1/x² = 146

∴x²+ 1/x² = 146

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Answer 2

Answer:

Step-by-step explanation:

Hello mate ..

X-1/x=12

(X-1/x)^2=12^2

X^2-2×X×1/X+(1/X)^2=144

=X^2-2+1/X^2=144

=X^2+1/X^2 =144+2

So,x^2+1/x^2=146

Hope it helps

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