Could anyone please explain the last example given at the end of "Introduction to Quadratic equations" video. It is a graph based question asking for the appropriate equation explaining the graph given.

Question

Answer 1

the graph shows that the equation has 2 positive roots and 1 negative root. So maximum positive roots for any given option should be two, ie no. of sign changes should be at least 2, its not in option 2 ,

Answer 2

the graph shows that the equation has 2 positive roots and 1 negative root. So maximum positive roots for any given option should be two, ie no. of sign changes should be at least 2, its not in option 2 ,

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Could anyone please explain the last example given at the end of "Introduction to Quadratic equations" video. It is a graph based question asking for the appropriate equation explaining the graph given.