[ (√3 - 1)(√3 - 1) ] / [ (√3 + 1)(√3 - 1) ]
= [ 3 - 2√3 + 1 ] / [ 3 - 1 ]
= (4 - 2√3) / 2
= 2 - √3
Comparing this with the expression a + b√3, we can equate the coefficients of √3:
a = 2
b = -1
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[ (√3 - 1)(√3 - 1) ] / [ (√3 + 1)(√3 - 1) ]
= [ 3 - 2√3 + 1 ] / [ 3 - 1 ]
= (4 - 2√3) / 2
= 2 - √3
Comparing this with the expression a + b√3, we can equate the coefficients of √3:
a = 2
b = -1