Answer:
-10, 10
Step-by-step explanation:
To do that, we can set up an equation:
[tex]8x^2-800=0[/tex]
We can divide both sides by 8 to make it easier to solve:
[tex]x^2-100=0[/tex]
Now, isolate the x and take the square root of both sides:
[tex]x^2=100\\x=\pm10[/tex]
Therefore, the 2 zeroes of f(x) are -10 and 10.