Question

simplify the following using the identify (a+b)²=a²+2ab+b² 22²​

Answer 1

Answer:

22× 22

using identity ( a+b)×a+b =a×a+b×b +2ab

(20+2) (20+2)=20 ×20 +2×2+2×20×2

22 ×22 = 400+4+80

484=484