Answer: 3x^4 - 8x^2 + 8x + 7
We are given the expression
[tex]\begin{gathered} (3x^4+2x-5x^2)+(6x-3x^2\text{ + 7)} \\ \text{Firstly, open the parentheses} \\ 3x^4+2x-5x^2+6x-3x^2\text{ + 7} \\ \text{Secondly, collect the like terms} \\ 3x^4-5x^2-3x^2\text{ + 2x + 6x + 7} \\ 3x^4-8x^2\text{ + 8x + 7} \end{gathered}[/tex]
The answer is option
