Surds and Indices Some basic concepts of Surds and Indices
Laws of Indices
a ×a = a m
n
(a ) m
n
m+ n
= a mn
m
a m −n =a n a
( ab )
n
= a nb n
n
an a = n b b
a =1 0
What is a Surd ď‚žLet
a be a rational number and n be a positive integer such that 1 . is n a an = n a irrational..Then is called a surd of order n.
Laws of Surds a =a
n
n
( a)
1 n
n
ab = n a Ă— n b
( a) n
n
=a
n
m
= n am
a na =n b b
m n
a = mn a
Basic understanding of Surds and Indices is helpful guide to solve math homework problems easily.