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x-> ~
= lim √(4x² + 8x - 5) - √(2x - 1)²
x-> ~
= lim √(4x² + 8x - 5) - √(4x² - 4x + 1)
x-> ~
gunakan (b - p)/2√a, dengan
a = 4
b = 8
c = -5
p = -4
q = 1
dengan
(8 - (-4))/2√4
= 12/(2.2)
= 12/4
= 3