Which equation can be solved by using this system of equations? y is equal to 3 x cubed minus 7 x squared plus 5 y is equal to 7 x to the 4th power plus 2 x

To solve the system, set the two expressions for y equal to each other: 3x³ − 7x² + 5 = 7x⁴ + 2x. This matches choice A, which is the equation formed by equating the right-hand sides of the two equations.

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