Answer:
√2, -√2, and -1
Step-by-step explanation:
Given: x⁴ - 3x² + 2 = 0
Then, let y = x².
(x²)² - 3(x²) + 2 = 0
y² - 3y + 2 = 0
(y - 2)(y - 1) = 0
Then, (x² - 2)(x² - 1) = 0
Case 1: x² - 2 = 0
x² = 2
x = ±√2
Case 2: x² - 1 = 0
x² = 1
x = ±1
Please mark me brainliest if it helps!
~~DeanGD20
#CarryOnLearning
