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The equation y = x^4 + 3x^3 - x^2 - 3x has four solutions and is shown in its graph. Which of the following student statements is true?

The equation has four non-real solutions because there are four x-intercepts.

The equation has three real solutions because there are three turning points on the graph.

The equation has four real solutions because there are four x-intercepts.

1 answer

The correct statement is: The equation has three real solutions because there are three turning points on the graph.
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