Answer:
28 meters above sea level or just positive 28
Step-by-step explanation:
Answer:
k=5
Step-by-step explanation:
Answer:
Step-by-step explanation:
x⁴ - 3x² + 2 = 0
x^2×2 - 3x² + 2 = 0
(x²)² - 3x² + 2 = 0
t² - 3t + 2 = 0
t = 1, t = 2
x² = 1, x² = 2
x = -1, x = 1
x = - square root 2, x = square root 2