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help help help help!!!!! describe and correct the error in finding the sun or difference in full sentences. Giving brainliest for first best answer

help help help help describe and correct the error in finding the sun or difference in full sentences Giving brainliest for first best answer class=

Respuesta :

lkwkn

Answer: should be

-3x^2+4x

Step-by-step explanation: combining like terms