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2009-11-26T11:21:22+01:00
A)

3/ √5 = 3*√5 / √5*√5 = 3√5 / 5

b)

3/ 1 -√2 = 3 * √2 / 1* √2 *√2 = 3√2 / -1
1 5 1
2009-11-26T11:23:30+01:00
3/√5 × √5/√5 = 3×√5/√5×√5 = 3√5/5

3/1-√2 = 3 + √2/(1-√2)(1+√2) = 3+√2/1 - 2 = 3 - 3√2/-1
1 5 1
2009-11-26T11:26:09+01:00
A)
3/√5 = 3/√5 x √5/√5 = 3√5/5
b)
3/1-√2 = 3/1-√2 X 1- √2/1-√2 = (3 - 3√2)/-2
1 5 1