The expression can be simplified by combining the like terms:
5x^{2} + 3x - 2x^{2} + 4x
= (5x^{2} - 2x^{2}) + (3x + 4x)
= 3x^{2} + 7x
Therefore, the equivalent expression is `3x^{2} + 7x`.
Which expression is equivalent to `5x^{2}+3x-2x^{2}+4x?`
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