1.

If (2 + √5) ÷ (2 - √5) = x and (2 - √5) ÷ (2 + √5) = y; find the value of x​​​​​​2 - y​​​​​​2

Answer»

If (2 + √5) ÷ (2 - √5) = x and (2 - √5) ÷ (2 + √5) = y; find the value of x​​​​​​2 - y​​​​​​2



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