Question

find the product by using formula 64.5*55.5​

Answer 1

Answer:

$64.5 \times 55.5 \\ \\ (60 + 4.5)(60 - 4.5) \\ \\ {(60)}^{2} - {(4.5)}^{2} \\ \\ 3600 - 20.25 \\ \\ = \: 3579. 75$

Answer 2

Answer:

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