Question

a) 6m³ + 2m³ - 3 m³ =

b) 2p² - 3p + 7 – p² + 5p + 10=

c) 3xy² + 2xy – 3x²y – 6 + 4xy + xy² - 6.
me ajudem, não consigo chegar em uma boa resposta. :{​

Answer 1

Resposta:

$6m^3+2m^3-3m^3\\\\=5m^3\\\\\\\\2p^2-3p+7-p^2+5p+10\\\\=2p^2-p^2-3p+5p+7+10\\\\=p^2-3p+5p+7+10\\\\=p^2+2p+7+10\\\\=p^2+2p+17\\\\\\\\3xy^2+2xy-3x^2y-6+4xy+xy^2-6\\\\=-3x^2y+3xy^2+xy^2+2xy+4xy-6-6\\\\=-3x^2y+4xy^2+2xy+4xy-6-6\\\\=-3x^2y+4xy^2+6xy-6-6\\\\=-3x^2y+4xy^2+6xy-12$