Math Is Fun Forum
Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °
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#1 2006-10-17 02:41:02
- dericteong
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- Registered: 2006-10-16
- Posts: 13
Surd again..
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#2 2006-10-17 03:22:01
- mathsyperson
- Moderator
- Registered: 2005-06-22
- Posts: 4,900
Re: Surd again..
In problems like this, you need to remove all surds from the denominator of the fraction.
When the denominator has 2 terms a+b, you rationalise it by multiplying by (a-b)/(a-b).
Why did the vector cross the road?
It wanted to be normal.
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#3 2006-10-17 03:49:09
- dericteong
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- Registered: 2006-10-16
- Posts: 13
Re: Surd again..
Thanks again.. mathsyperson.
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