Respuesta :

kenzies18809
(m + n + 3)(m + n + 4)
First distribute the m in the first set of parentheses to the second set of parentheses.  Do the same process with the n and the 3.
m^2 + mn + 4m + mn + n^2 + 4n + 3m +3n + 12
Combine Like terms. Final Answer:
m^2 + n^2 + 2mn + 7m + 7n + 12
isyllus

Answer:

2m+2n+7

Step-by-step explanation:

Given: Two polynomial

[tex]P_1=m+n+3[/tex]

[tex]P_2=m+n+4[/tex]

We need to find the sum of polynomial.

[tex]Sum=P_1+P_2[/tex]

[tex]\Rightarrow (m+n+3)+(m+n+4)[/tex]

write like term together  

[tex]\Rightarrow m+m+n+n+3+4[/tex]

Combine the like term

[tex]\Rightarrow 2m+2n+7[/tex]

Hence, The sum of two polynomial is 2m+2n+7

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