Step-by-step explanation:
Since 81 = 9² and 72 = 9 * 8,
81 + 72 = 9(9 + 8) = 9 * 17.
An expression is defined as a set of numbers, variables, and mathematical operations. The expression 81+72 as a product using GCF as one of the factors can be written as 9(9+8).
In mathematics, an expression is defined as a set of numbers, variables, and mathematical operations formed according to rules dependent on the context.
The expression 81+72 as a product using GCF as one of the factors can be written as,
81+72
= 9(9+8)
Hence, the expression 81+72 as a product using GCF as one of the factors can be written as 9(9+8).
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