1) (-2a^3+ab^2) + (a^2-1) + (a^2b-ab^2) + 3a^3 2) (3m^2+5mn+7m^2y) - (5mn+3m^2) - (7m^3y-3m^2)

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Алгебра

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19 декабря, 16:39

1) (-2a^3+ab^2) + (a^2-1) + (a^2b-ab^2) + 3a^3 2) (3m^2+5mn+7m^2y) - (5mn+3m^2) - (7m^3y-3m^2)

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Настасея · Answer 1

1) (-2a^3+ab^2) + (a^2-1) + (a^2b-ab^2) + 3a^3 =

-2a^3+ab^2+a^2-1+a^2b-ab^2+3a^3=

a^2+a^2b+a^3-1 2) (3m^2+5mn+7m^2y) - (5mn+3m^2) - (7m^3y-3m^2) = 3m^2+5mn+7m^2y-5mn-3m^2-7m^3y+3m^2=

7m^2y-7m^3y+3m^2