If ✓2=1.414, find value of 1 over ✓2+1
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rationalise 1/√2 +1
1* (√2-1)/ (√2+1)*(√2-1) = (√2-1)/(√2)²-1²
=√2-1/1
=1.414-1/1
=0.414
1* (√2-1)/ (√2+1)*(√2-1) = (√2-1)/(√2)²-1²
=√2-1/1
=1.414-1/1
=0.414
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