algebra 2 lesson 6 practice answer key
sion or polynomial division for higher degrees Sample Practice Problem: Factor \(x^4 - 5x^2 + 4\). Answer Key Approach: Recognize as a quadratic in terms of \(x^2\): Let \(y = x^2\), rewriting as \(y^2 - 5y + 4\). Factor as \((y - 1)(y - 4)\). Substitute back \(x^2\): \