Question

1 If x2 + - 102, then the value of is 2 X X- х​

Answer 1

Answer:

x2+x21=102

We know that (x−x1)2=x2+x21−2×x×x1

⇒(x−x1)2=102−2=100

⇒x−x1=100=±10

∴x−x1=±10

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Answer 2

Answer:

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