Through microscopic observation. It shows the activity of bacterial growth on the foot area, where this growth at several days can be described by the following function (x+1 if 0sxS5 F() -25 -x if 525 Where t represents the number of days. What time does the bacteria die (growth becomes zero)

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Polynomials

Try substituting 1. You will get 6 and not 0. Try other real values also. What About -2? Let us check.