Respuesta :
Step-by-step explanation:
The given equation is as follows.
[tex](8x^{2}-9y^{2}-4x) + (x^{2}-3y^{2}-7x)[/tex]
Both the equations can be added with coefficients of same variables. Coefficients with different variables cannot be added together.
Therefore, place the same variables together as follows.
[tex](8x^{2}-9y^{2}-4x) + (x^{2}-3y^{2}-7x)[/tex]
= [tex]8x^{2}+x^{2}-9y^{2}-3y^{2}-4x-7x[/tex]
Adding the respective variables, we will get the following.
[tex]8x^{2}+x^{2}-9y^{2}-3y^{2}-4x-7x[/tex]
= [tex]9x^{2}-12y^{2}-11x[/tex]
Thus, we can conclude that sum of [tex](8x^{2}-9y^{2}-4x) + (x^{2}-3y^{2}-7x)[/tex] is [tex]9x^{2}-12y^{2}-11x[/tex].
