Question

7^2+1^2=
(7+1)^2 =
What should be added to 7^2+1^2 get (7+1)^2?

Answer 1

(7+1)^2
=7^2 + 2×7×1 +(1)^2
{ as (a+b)^2= a^2 +2ab +b^2}

so, we should add 2×7×1=14

Answer 2

Answer:

(7+1)^2

=7^2 + 2×7×1 +(1)^2

{ as (a+b)^2= a^2 +2ab +b^2}

so, we should add 2×7×1=14

Step-by-step explanation: