Multiple Choice

A site supervisor is using the Square Root Property procedure to solve the equation $5m^2 = 80forthesidelengthofasquarefoundation.Afterfindingthesolutionfor the side length of a square foundation. After finding the solutionm = -4,thesupervisorperformsthefinalstep:checkingthesolution.Accordingtotheprocedure,whichofthefollowingexpressionscorrectlyrepresentsthesubstitutionusedtoverifythat, the supervisor performs the final step: checking the solution. According to the procedure, which of the following expressions correctly represents the substitution used to verify that m = -4$ is a correct solution?

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Updated 2026-04-20

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