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x ⇒ ∞
= L i m √(4x²+4x+1) + √(9x²+6x) - √25(x² - x)
x ⇒ ∞
= L i m √(4x²+4x+1) + √(9x²+6x) - 5√(x² - x)
x ⇒ ∞
= L i m √(4x²+4x+1) - 2√(x² - x) + √(9x²+6x) - 3√(x² - x)
x ⇒ ∞
= L i m {√(4x²+4x+1) - √(4x² - 4x)} + {(√(9x²+6x) - √(9x² - 9x)}
x ⇒ ∞
= 4 - (-4) + 6 - (-9)
2√4 2√9
= 8/4 + 15/6
= 4/2 + 5/2
= 9/2