Answer:
[tex]4w^4-7z^4+6w^2z^2[/tex]
Step-by-step explanation:
We can reformat this equation so we can vertically add.
Then, we can just add down.
Since all the degrees and the variables are the same, we only have to worry about the coefficients.
5 - 1 = 4 --> [tex]4w^4[/tex]
-7 + 13 = 6 --> [tex]6w^2z^2[/tex]
-3 - 4 = -7 --> [tex]-7z^4[/tex]
Now let's rewrite this.
[tex]4w^4-7z^4+6w^2z^2[/tex]
