Think you are all very 'stress up' & confused by surd (i.e. A.Maths Chapter Ex 2.1)... but pls don't do this...
Little Fact about SURDS
How did we get the word "Surd" ?
Well, around 820 AD al-Khwarizmi (the Persian guy who we get the name "Algorithm" from) called irrational numbers "'inaudible" ... this was later translated to the Latin surdus ("deaf" or "mute")
Conclusion
If it is a root and irrational, it is a surd. But not all roots are surds.
P/S: Don't give up... keep on practising and you will do well!!!
