Question

en suma algebraica
45m²+(-7m²)+(-8m²)=​

Answer 1

Respuesta:

${30m}^{2}$

Explicación paso a paso:

${45m}^{2} + ( { - 7m}^{2} ) + ( - 8 {m}^{2} ) \\ 4 {5m}^{2} - {7m}^{2} - {8m}^{2} \\ {m}^{2} (45 - 7 - 8) \\ {m}^{2} (38 - 8) \\ {m}^{2} (30) = 30 {m}^{2}$