Question

Determine o Polinômio ( 7ax - 5xy + 3bm + 2 ) – ( 8ax + 4xy – 9bm – 7 ).

Answer 1

$( 7ax - 5xy + 3bm + 2 ) - ( 8ax + 4xy - 9bm - 7 )\\(7ax - 8ax) + (-5xy - 4xy) + (3bm + 9bm) + (2 + 7)\\\boldsymbol{-ax - 9xy + 12bm + 9}$

Answer 2

Resposta:

$\sf ( 7ax-5xy + 3bm + 2 ) - ( 8ax + 4xy- 9bm -7 ) = \boldsymbol{ \sf \displaystyle - ax - 9xy + 12 bm + 9 }$

Explicação passo-a-passo:

$\sf ( 7ax-5xy + 3bm + 2 ) - ( 8ax + 4xy- 9bm -7 ) \quad \gets \mbox{ \sf Eliminar o parente.}$

$\sf 7ax-5xy + 3bm + 2 - 8ax - 4xy + 9bm +7 \quad \gets \mbox{ \sf Agrupar os termos semelhantes.}$

$\sf 7ax - 8ax - 5xy - 4xy + 3bm + 9bm +2 + 7 \quad \gets \mbox{ \sf Somar ou diminuir.}$

$\boldsymbol{ \sf \displaystyle - ax - 9xy + 12 bm + 9 }$