Question

100 square + 20 square . solve by using identity and chapter algebric expression​

Answer 1

Answer:

answer is 10400

Step-by-step explanation:

$100^2 + 20^2$

$10000 + 400$

$10400$

Answer 2

Step-by-step explanation:

(100²+20²)= (100+20)²-2×100×20

=14400-4000

=10400

(a²+b²)=(a+b)²-2ab