Question

Simplify. (7+m)^3
anyone please?????​

Answer 1

Answer:

m³ + 21m² + 147m + 343

Step-by-step explanation:

(a + b)³

= a³ + b³ + 3 ab (a + b)

(7 + m)³

= 7³ + m³ + 3 x 7 x m (7 + m)

= 343 + m³ + 21m(7 + m)

= 343 + m³ + 147m + 21m²

= m³ + 21m² + 147m + 343

Hope it helps you

Thanks

Answer 2

Answer:

343 + m^3 + 147m+ 21m^2

SO BASICALLY, WE NEED TO EXPAND IT.

(7+m)^3

Using the identity (a+b)^3= a^3 + b^3 + 3ab (a +b)

= 7^3 + m^3 + 3 (7) (m) [ 7 + m]

= 343 + m^3 + (21m) (7+m)

= 343 + m^3 + 147m+ 21m^2