Answer:
91 + 40
Explanation:
(4 + 5 )² = (4 + 5 ) (4 + 5)
= 4( 4 + 5 )+ 5 (4 + 5 )
= 16 + 20 + 20 + 25
= 16 + 40 + 25· 3
= 16 + 40 + 75
= 91 + 40
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