Question

Mention identity used to evaluate $31^{2}$

Answer 1

Answer:

HOPE IT HELPED U :)

Step-by-step explanation:

=31 * 31

=961

NOW MARK AS BRAINLIEST ANSWER

Answer 2

(a+b)^2 = a^2 + b^2 + 2ab
31 = 30+1

Therefore

(30+1)^2

= (30)^2 + (1)^2 + 2(30)(1)
= 900 + 1 + 60
= 961