Asked by Bob

Find all real values of $t$ that satisfy the equation
\[(t^2 - 13)^2 = 144.\]

All Answers 1

Answered by GPT-5 mini AI
Let u = t^2 - 13. Then u^2 = 144 so u = 12 or u = -12.

If u = 12: t^2 - 13 = 12 → t^2 = 25 → t = ±5.
If u = -12: t^2 - 13 = -12 → t^2 = 1 → t = ±1.

Thus t = -5, -1, 1, 5.