What is the limit as x approaches 4 of sqrt(x^2+20) ?

The limit as x approaches 4 of sqrt(x^2+20) is 6

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limit as x approaches 4 of sqrt(x^2+20)

x \to 4 lim (x^{2} + 20)

6

Solution steps

x \to 4 lim (x^{2} + 20)

Plug in the value

x = 4

= 4^{2} + 20

Simplify

4^{2} + 20 : 6

= 6

\frac{d}{d x} (\frac{3 x ^{2}}{x ^{2} + 2 x - 1})

f (x) = x^{3} - 3 x + 1, at x = 2

\int e^{x} - x e^{x} d x

f (x) = - \frac{42}{( x + 4 ) ^{4}}

\int_{0}^{5} \frac{1}{x ^{\frac{20}{19}}} d x

What is the limit as x approaches 4 of sqrt(x^2+20) ?
The limit as x approaches 4 of sqrt(x^2+20) is 6