Question

Sum of polynomials?
(m+n+3) + (m+n+4)

A.-1
B.m2+n2+7
C.2m+2n+7
D.2m2+2n2+7

Answer 1

the answer is c because there are 2 m's, 2 n's, and 3+4 is 7

Answer 2

Answer:  Option 'C' is correct.

Explanation:

Since we have given that

$(m+n+3)+(m+n+4)$

We need to calculate the sum of polynomial for which we will group the like terms and add them.

So,

We first grouping the like terms , i.e.

$m+m+n+n+3+4$

Now, add the like terms, we get

$2m+2n+7$

Therefore, the sum of above polynomial is

$2m+2n+7$

Hence, Option 'C' is correct.