Solve 7x^3/3+7

$$\frac{ 7 { x }^{ 3 } }{ 3 } +7$$

Evaluate

$$\frac{7\left(x^{3}+3\right)}{3}$$

Short Solution Steps

To add or subtract expressions, expand them to make their denominators the same. Multiply 7 times \frac{3}{3}.

$$\frac{7x^{3}}{3}+\frac{7\times 3}{3}$$

Since \frac{7x^{3}}{3} and \frac{7\times 3}{3} have the same denominator, add them by adding their numerators.

$$\frac{7x^{3}+7\times 3}{3}$$

Do the multiplications in 7x^{3}+7\times 3.

$$\frac{7x^{3}+21}{3}$$

Factor

$$\frac{7\left(x^{3}+3\right)}{3}$$

Solution Steps

Factor out \frac{7}{3}. Polynomial x^{3}+3 is not factored since it does not have any rational roots.

$$\frac{7\left(x^{3}+3\right)}{3}$$