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As it's an indeterminate limit of type $\frac{\infty}{\infty}$, divide both numerator and denominator by the term of the denominator that tends more quickly to infinity (the term that, evaluated at a large value, approaches infinity faster). In this case, that term is
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$\lim_{x\to{- \infty }}\left(\frac{\frac{4x^4+x^2+5x}{-x^{4}}}{\frac{\sqrt{64x^8+x^6}}{-x^{4}}}\right)$
Learn how to solve problems step by step online. Find the limit of (4x^4+x^25x)/((64x^8+x^6)^(1/2)) as x approaches -infinity. As it's an indeterminate limit of type \frac{\infty}{\infty}, divide both numerator and denominator by the term of the denominator that tends more quickly to infinity (the term that, evaluated at a large value, approaches infinity faster). In this case, that term is . Rewrite the fraction, in such a way that both numerator and denominator are inside the exponent or radical. Separate the terms of both fractions. Simplify the fraction \frac{4x^4}{-x^{4}} by x^4.