Page 114 - Algebra

Worked Example
2 Using the standard identities, find the value of 105 .
Solution:
105 can be written as (100 + 5)2
Use the identity, (a + b)2 = a2 + 2ab + b2 (100+5)2 =1002 +2×100×5+52
= 10000 + 1000 + 25
= 11025
Page 113 of 177
Algebra I & II