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I need help!!! "The curve whose equation is y=ax^3+bx^2+cx+d has a point of inflexion at (-1,4), has a turning point when x=2?

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  • I need help!!! "The curve whose equation is y=ax^3+bx^2+cx+d has a point of inflexion at (-1,4), has a turning point when x=2?


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