Question

limx−>∞ of (√x2+4x−√x2−5x)

Answer 1

**negative infinity

Answer 2

\[\lim_{x \rightarrow -\infty}\sqrt{x^2+4x}-\sqrt{x^2-5x}\]?

Answer 3

if so multiply it by\[\frac{\sqrt{x^2+4x}+\sqrt{x^2-5x}}{\sqrt{x^2+4x}+\sqrt{x^2-5x}}\]and simplify...

Answer 4

i did that but im stuck at \[9x \div \sqrt{x^2+4x} +\sqrt{x^2-5x)}\]