Question

109×100 use the suitable identity

Answer 1

Step-by-step explanation:

10900 is the right answer

Answer 2

Question:-

109×100 use the suitable identity

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

Step-by-step explanation:

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