Respuesta:
Explicación paso a paso:
a) 3m+2n-5n+4m
3m+4m+2n-5n
7m+2n-5n
=7m-3n
b) 6x²+3x-5x²7x
6x²-5x²+3x-7x
x²+3x-7x
=x²-4x
c) 12m²n+5mn²-8m²n+8mn
12m²n-8m²n+5mn²+8mn
=4m²n+5mn²+8mn
d) a²b+2ab²-ab²+4a³b
=a²b+ab²+4a³b
c) x²+3x+4x+7x
=x²+14x
espero que te sirva
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Respuesta:
Explicación paso a paso:
a) 3m+2n-5n+4m
3m+4m+2n-5n
7m+2n-5n
=7m-3n
b) 6x²+3x-5x²7x
6x²-5x²+3x-7x
x²+3x-7x
=x²-4x
c) 12m²n+5mn²-8m²n+8mn
12m²n-8m²n+5mn²+8mn
=4m²n+5mn²+8mn
d) a²b+2ab²-ab²+4a³b
=a²b+ab²+4a³b
c) x²+3x+4x+7x
=x²+14x
espero que te sirva