Question

Find the value of each of the following without calculating squares.
(i) 272
– 262
(ii) 1182
– 1172

Answer 1

a²-b² = (a+b)(a-b)

I)27²-26²= (27+26)×(27-26)= 53×1=53

II)118²-117²=(118+117)(118-117) = 235×1=235

therefore, answer is 53&235 respectively

Answer 2

Answer:

youse the Book ,