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.

Nishank Garg

3 years, 11 months ago

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 ,