What is the product of two conjugate binomial surds?
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a 2 − b 2 = ( a + b ) ( a − b ) . The sum and difference of two quadratic surds is called as conjugate to each other. For example = a and = b, a and b are two quadratic surds, if (a + b) or is multiplied with (a - b) or , the result will - or (x - y) which is rational number.
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