Question

$(x - y)(x + y) = 1$
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Answer 1

Answer:

Given:-

$(x - y)(x + y) = 1$

Solution:-

$(x - y)(x + y) = 1$

In this we will multiply the bracket variables, let's take x-y for multiplication

$x(x + y) - y(x+y) = 1$

$x² + xy - yx or xy + y² = 1$

Now,we will subtract or add the common terms according to their symbols

$x² + y² = 1$

xy and yx or xy will be canceled because of having different signs

Answer:-

x²+y² = 1

:)