rationalize:.........................!!!!
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1/1-√2-√3 × 1+√2+√3/1+√2+√3
= 1+√2+√3/(1)^2 - (√2)^2 - (√3)^2
= 1+√2+√3/1-2-3
=1+√2+√3/-4
= 1+√2+√3/(1)^2 - (√2)^2 - (√3)^2
= 1+√2+√3/1-2-3
=1+√2+√3/-4
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