Answer:
0 I think??
Step-by-step explanation:




Ok, to show that she is incorrect we can use any other number in both equations and they will not be equal. the number she used does turn out equal but that does not mean the equations are equal.
for example
2 times 3=6
3 to the power of 2 is 9
that shows the expressions are not equal
240 because 8 times 30 equals 240
Answer:
2√21
Step-by-step explanation:
Diagonal =√(L²+W²+H²)
Diagonal =√(8²+4²+2²)=√(64+16+4)=√84=2√21
Answer:
-1, 3, -3
Step-by-step explanation:
I don't see the graph, but you can solve by factoring:

By the factor theorem, the solutions of f(x) are -1, 3, and -3.