Answer:
Other root: 

Step-by-step explanation:
If
, then
.
Therefore:





This means that the other root is
since 
Answer:
12
Step-by-step explanation:
Count the units in between the points
Answer:
23
Step-by-step explanation:
You can simply substitute -2 into the x of the equation.
f(-2) = (-2)^4 + 2(-2)^2 -1
= 23
Answer:
your answer will be x = 5
Step-by-step explanation: