Sample Response: Percy is not correct because he applied the zero product property to a factored expression that was not equal to 0. He should have subtracted 12 from both sides to get x2 + 7x = 0 before factoring. The correct solutions are 0 and -7. What did you include in your response? Check all that apply. Percy was not correct. Percy did not write the equation in standard form before factoring. The correct solutions are 0 and –7. The equation should have first been written as x2 + 7x = 0 before factoring. The solutions 8 and 9 do not make the equation true.