7+355 +57 - 356
3 +55 3-55
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Answered by
0
Answer:
7 + 355 + 57 - 356
= 355 + 64 - 356
= 419 - 356
===> 63
( 3 + 55 ) ( 3 - 55 )
= Using formula ( a + b ) ( a - b ) = a2 - b2
= ( 3 ) 2 - ( 55 ) 2
= 9 - 3025
===> - 3016 .
Answered by
0
Answer:
7+355+57-356+3+55+3-55=69
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