Solve 1:-x^3+4

$$1 : - x ^ { 3 } + 4$$

Evaluate

$$4-\frac{1}{x^{3}}$$

Short Solution Steps

Factor -x^{3}.

$$\frac{1}{-x^{3}}+4$$

To add or subtract expressions, expand them to make their denominators the same. Multiply 4 times \frac{-x^{3}}{-x^{3}}.

$$\frac{1}{-x^{3}}+\frac{4\left(-1\right)x^{3}}{-x^{3}}$$

Since \frac{1}{-x^{3}} and \frac{4\left(-1\right)x^{3}}{-x^{3}} have the same denominator, add them by adding their numerators.

$$\frac{1+4\left(-1\right)x^{3}}{-x^{3}}$$

Do the multiplications in 1+4\left(-1\right)x^{3}.

$$\frac{1-4x^{3}}{-x^{3}}$$

Factor

$$\frac{4x^{3}-1}{x^{3}}$$