Answer:
option A :[tex]14 x^7[/tex]
Explanation:
We are given that [tex]6x^7+8x^7[/tex]
We have to find the sum
Sum of algebraic expression
First we see that given terms are like or not
If the terms are like terms then
We take variable common then we get
[tex](6+8)x^7[/tex]
[tex]6x^7+8x^7=14 x^7[/tex]
Then the coefficient will be added and the variable remain same
Hence,the option A is true.