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Anonymous
It is: 9*(8+1) = 81
Willy Cummings ∙
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It is: 9(8+1) is equivalent to (72+9) and they both total to 81
Wiki User
The expression when factored is equivalent to: 9(8+1) and they both add to 81
If you add the two numbers, you'll get an equivalent expression.
Whatever equals 81, like 9 x 9
(72+9)