Respuesta :

We have the following:

[tex]\left(6x^3+5x^{2}+3\right)-\left(3x^{2}-4x^{2}-7\right)[/tex]

We reduce similar terms:

[tex]\begin{gathered} 6x^3+5x^{2}+3-3x^{2}-4x^{2}-7 \\ 3x^3+x^{2}-4 \end{gathered}[/tex]

therefore, the answer is 3x^3 + x^2 - 4