Solve the equation x4 2x2 3. Solution: x4 2x2 3 0 u x2 u2 2u 3 0 (u 3)(u 1) 0 u 1, u 3 u
Chapter 1, Problem 104(choose chapter or problem)
Solve the equation x4 2x2 3. Solution: x4 2x2 3 0 u x2 u2 2u 3 0 (u 3)(u 1) 0 u 1, u 3 u x2 x2 1, x2 3 x ;1, x ;3 This is incorrect. What mistake was made? In Exercises
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