Multiple Choice

A project coordinator is verifying a simplified resource model derived from the original expression xy+3y+2x+6xy + 3y + 2x + 6. After factoring the expression into (x+3)(y+2)(x + 3)(y + 2), the coordinator performs the final step of the grouping method: 'Check by multiplying.' According to the standard procedure, what is the primary purpose of this final step?

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Updated 2026-04-21

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