Which system of equations can you use to find the roots of the equation 2x3 + 4x2 – x + 5 = –3x2 + 4x + 9?

To find the roots of the equation, graph its left side and right side as two expressions for y. The system should be y = 2x³ + 4x² − x + 5 and y = −3x² + 4x + 9, which matches choice C. The x-coordinates where these graphs intersect make the two sides equal, so they are the roots of the original equation.

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