Pertanyaan

N i l ai d a r i x → ∞ lim 25 x 2 − 9 x − 16 − 5 x + 3 = .......

$N i l ai d a r i x \to \infty lim 25 x^{2} - 9 x - 16 - 5 x + 3 = .......$

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D. Kamilia

Master Teacher

Mahasiswa/Alumni Universitas Negeri Malang

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Pembahasan

$limit as x rightwards arrow infinity of square root of 25 x squared minus 9 x minus 16 end root minus 5 x plus 3 equals limit as x rightwards arrow infinity of square root of 25 x squared minus 9 x minus 16 end root minus left parenthesis 5 x plus 3 right parenthesis equals limit as x rightwards arrow infinity of square root of 25 x squared minus 9 x minus 16 end root minus square root of open parentheses 5 x plus 3 close parentheses squared end root equals limit as x rightwards arrow infinity of square root of 25 x squared minus 9 x minus 16 end root square root of 25 x squared minus 30 x plus 9 end root equals fraction numerator b minus q over denominator 2 square root of a end fraction equals fraction numerator negative 9 plus 30 over denominator 2 square root of 25 end fraction equals 21 over 10$

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