Multiple Choice

A technical analyst is verifying a machine's performance model represented by the equation 3p(10p+7)=03p(10p + 7) = 0. After calculating a potential solution of p=βˆ’710p = -\frac{7}{10}, the analyst must perform a 'Check' step to ensure accuracy. According to the standard procedure for solving quadratic equations, which of the following expressions correctly shows the substitution of p=βˆ’710p = -\frac{7}{10} into the original equation for verification?

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Updated 2026-04-21

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