Question

109 square - 108 square​

Answer 1

Answer:

I hope this helps you

Step-by-step explanation:

109 square - 108 square

=11,881-11664

=217

Answer 2

Answer:

109 × 108

( 100 + 9 ) × ( 100 + 8 )

Using identity,

( x + a )( x + b ) = x² + ( a + b )x + ab  

➡️ ( 100 )² + ( 9 + 8 ) 100 + 9 × 8  

➡️ 10000 + 17 × 100 + 72  

➡️ 10000 + 1700 + 72  

➡️ 11772

Therefore,  

109 × 108 = 11772

Hope it helps you

Step-by-step explanation:

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