Calculus Examples

$lim_{x \to - 2} \sqrt[3]{\frac{x^{3} + 2 x^{2} - 3 x + 2}{x^{2} + 4 x + 3}}$

Step 1

Move the limit under the radical sign.

$\sqrt[3]{lim_{x \to - 2} \frac{x^{3} + 2 x^{2} - 3 x + 2}{x^{2} + 4 x + 3}}$

Step 2

Split the limit using the Limits Quotient Rule on the limit as $x$ approaches $- 2$ .

$\sqrt[3]{\frac{lim_{x \to - 2} x^{3} + 2 x^{2} - 3 x + 2}{lim_{x \to - 2} x^{2} + 4 x + 3}}$

Step 3

Split the limit using the Sum of Limits Rule on the limit as $x$ approaches $- 2$ .

$\sqrt[3]{\frac{lim_{x \to - 2} x^{3} + lim_{x \to - 2} 2 x^{2} - lim_{x \to - 2} 3 x + lim_{x \to - 2} 2}{lim_{x \to - 2} x^{2} + 4 x + 3}}$

Step 4

Move the exponent $3$ from $x^{3}$ outside the limit using the Limits Power Rule.

$\sqrt[3]{\frac{{(lim_{x \to - 2} x)}^{3} + lim_{x \to - 2} 2 x^{2} - lim_{x \to - 2} 3 x + lim_{x \to - 2} 2}{lim_{x \to - 2} x^{2} + 4 x + 3}}$

Step 5

Move the term $2$ outside of the limit because it is constant with respect to $x$ .

$\sqrt[3]{\frac{{(lim_{x \to - 2} x)}^{3} + 2 lim_{x \to - 2} x^{2} - lim_{x \to - 2} 3 x + lim_{x \to - 2} 2}{lim_{x \to - 2} x^{2} + 4 x + 3}}$

Step 6

Move the exponent $2$ from $x^{2}$ outside the limit using the Limits Power Rule.

$\sqrt[3]{\frac{{(lim_{x \to - 2} x)}^{3} + 2 {(lim_{x \to - 2} x)}^{2} - lim_{x \to - 2} 3 x + lim_{x \to - 2} 2}{lim_{x \to - 2} x^{2} + 4 x + 3}}$

Step 7

Move the term $3$ outside of the limit because it is constant with respect to $x$ .

$\sqrt[3]{\frac{{(lim_{x \to - 2} x)}^{3} + 2 {(lim_{x \to - 2} x)}^{2} - 3 lim_{x \to - 2} x + lim_{x \to - 2} 2}{lim_{x \to - 2} x^{2} + 4 x + 3}}$

Step 8

Evaluate the limit of $2$ which is constant as $x$ approaches $- 2$ .

$\sqrt[3]{\frac{{(lim_{x \to - 2} x)}^{3} + 2 {(lim_{x \to - 2} x)}^{2} - 3 lim_{x \to - 2} x + 2}{lim_{x \to - 2} x^{2} + 4 x + 3}}$

Step 9

Split the limit using the Sum of Limits Rule on the limit as $x$ approaches $- 2$ .

$\sqrt[3]{\frac{{(lim_{x \to - 2} x)}^{3} + 2 {(lim_{x \to - 2} x)}^{2} - 3 lim_{x \to - 2} x + 2}{lim_{x \to - 2} x^{2} + lim_{x \to - 2} 4 x + lim_{x \to - 2} 3}}$

Step 10

Move the exponent $2$ from $x^{2}$ outside the limit using the Limits Power Rule.

$\sqrt[3]{\frac{{(lim_{x \to - 2} x)}^{3} + 2 {(lim_{x \to - 2} x)}^{2} - 3 lim_{x \to - 2} x + 2}{{(lim_{x \to - 2} x)}^{2} + lim_{x \to - 2} 4 x + lim_{x \to - 2} 3}}$

Step 11

Move the term $4$ outside of the limit because it is constant with respect to $x$ .

$\sqrt[3]{\frac{{(lim_{x \to - 2} x)}^{3} + 2 {(lim_{x \to - 2} x)}^{2} - 3 lim_{x \to - 2} x + 2}{{(lim_{x \to - 2} x)}^{2} + 4 lim_{x \to - 2} x + lim_{x \to - 2} 3}}$

Step 12

Evaluate the limit of $3$ which is constant as $x$ approaches $- 2$ .

$\sqrt[3]{\frac{{(lim_{x \to - 2} x)}^{3} + 2 {(lim_{x \to - 2} x)}^{2} - 3 lim_{x \to - 2} x + 2}{{(lim_{x \to - 2} x)}^{2} + 4 lim_{x \to - 2} x + 3}}$

Step 13

Evaluate the limits by plugging in $- 2$ for all occurrences of $x$ .

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Step 13.1