Question

Evaluate the following using suitable identity 31*31-29*29

Answer 1

you can use the identity ...
a^2-b^2=(a-b)(a+b)

so,(31-29)(31+29)=2 . 60 =120
is the answer...

Answer 2

Answer:

120

Step-by-step explanation:

a*2-b*2 (a-b) (a+b)

(31-29) (31+29)

120 answer