What is the exact question here?
Insert y in the second equation and solve for x:
4x+(x^2-8)=-8
4x+x^2-8=-8
4x+x^2=0
x^2+4x=0
x = -4
Now you insers this x-value in the first or second equation (i use the first):
y=(-4)^2-8=16-8=8
Therefore the conclusion must be x=-4 and y=8
Answer:
The function is never decreasing.
Step-by-step explanation:
The function is never decreasing because as x increases, y also increases.
(x - 5)(x + 5)(2x - 1)
= (x ^ 2 - 25)(2x - 1)
= 2x ^ 3 - x ^ 2 - 50x + 25
