Concept:If the product of two factors is zero, then at least one of the factors must be zero. This is called the zero product property.Explanation:Given: (x+2)(x−7)=0So, either (x+2)=0 or (x−7)=0.First factor: x+2=0Subtract 2 from both sides: x=−2Second factor: x−7=0Add 7 to both sides: x=7Thus, the solutions are x=−2 or x=7.Answer:D.−2or7