Evaluate 9912 –
9812
Solution
We will apply difference of 2
squares.
m2 –
n2 = (m + n)(m – n)
9912 –
9812 = (991 + 981)( 991 – 981)
=
(1972)( 10)
= 19720
9912 –
9812 = 19720
TRY
THIS…………….
Evaluate 7062 –
6962
No comments:
Post a Comment