Question

103×104 using identities,evaluate the answer first to give answer is 10 points​

Answer 1

Answer:

9888

Step-by-step explanation:

103 ×104  

Split 103 as 100 + 3

Split 104 as 100 + 4

(100 + 3 ) ( 100 + 4)

By using the identity

(x + a)  ( x + b ) = x² + ( a − b ) x − a b .

= (100 )² +  (3 - 4 ) 100 - 12

= 10000 - 100 - 12

= 10000 - 112

= 9888

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