The four zeros of the polynomial $x^4 + jx^2 + kx + 225$ are distinct real numbers in arithmetic progression.  Compute the value of $j.$
Question:
The four zeros of the polynomial $x^4 + jx^2 + kx + 225$ are distinct real numbers in arithmetic progression.  Compute the value of $j.$
Answer:
Let's think step by step.

user
-50
The four zeros of the polynomial $x^4 + jx^2 + kx + 225$ are distinct real numbers in arithmetic progression.  Compute the value of $j.$
train