# zero-product property

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• To find the roots of a quadratic equation that can be factored, apply the Zero- Product Property.﻿
• I just don't get it!!﻿
• If the quadratic equation is x2-16=0 you have to find the square root of 16﻿
• The square root of 16 is 4﻿
• Yes so the factor would be..﻿
• (x+4)(x-4)=0?﻿
• Yes you're doing great! So if thats the factor then what are the roots?﻿
• Its ummm x=16 y=-4?﻿
• The x has to make the factors = 0﻿
• Nonono if the factors are (x+4)(x-4)=0﻿
• ﻿Yes! You got it! To get the factors to = 0 the value of x must be its opposite! (x+4) x=-4 (-4+4)=0
• ﻿Yes so what roots would make 4=0 and - 4= 0?
• x=-4 and x=+4?﻿
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