Mathematics, 27.06.2019 06:00 brie7396

1) how much greater than m^2+3mn−n^2 is 4m^2+5mn+6n^2? 2)how much less than 3x^2−7x+9 is 2x^2+4x−8? what is the value of the result when x=2? ^=power

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1) how much greater than m^2+3mn−n^2 is 4m^2+5mn+6n^2? 2)how much less than 3x^2−7x+9 is 2x^2+4x−8?...