a) (3 + √2) / √2 = (3 + √2) * √2 / √2 * √2 |
= (3√2 + 2) / 2 |
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b) (√2 - 1) / √2 = (√2 - 1) * √2 / √2 * √2 |
= (2 - √2) / 2 |
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c) (√3 - 2) / √3 = (3 - 2√3) / 3 |
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d) (√5 + √10) / √5 = (5 + √2 * √5 * √5) / 5 |
= (5 + 5√2) / 5 = 5(1 + √2) / 5 = 1 + √2 |
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e) (√14 + √21) / √7 = (7√2 + 7√3) / 7 |
= 7(√2 + √3) / 7 = √2 + √3 |
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f) (2√13 - √39) / √13 = (2 * 13 - 13√3) / 13 |
= 13(2 - √3) / 13 = 2 - √3 |
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