Question

find the square of 398 using algebraic identity. (write with full solution)​

Answer 1

Answer:

(400-2)(400-2)

160000-800-800+4

=151596

Answer 2

Answer:

158404.

Step-by-step explanation

Using the identity:

(a - b)^2 = a^2 + b^2 - 2ab:-

398^2 =

(400 - 2)^2

= 400^2 + 2^2 - 2*2*400

=  160000 + 4 - 1600

= 158404.