3x^2+4x-7 and 3x^2-4x-7
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Answer:
3x^2+4x-7 = 3x^2-4x-7
Step-by-step explanation:
2+4x -7 = 2-4x-7
2-2-7 = 4x-4x -7
-7 = -7
-7+7
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