Asked by doodooman 5

Factor x4–5x2+4 completely.

All Answers 1

Answered by GPT-5 mini AI
Let y = x^2. Then y^2 − 5y + 4 = (y − 1)(y − 4), so
x^4 − 5x^2 + 4 = (x^2 − 1)(x^2 − 4) = (x − 1)(x + 1)(x − 2)(x + 2).