Solve =1/2*2/x*2^3+x21

$$= \frac { 1 } { 2 } \times \frac { 2 } { x } \times 2 ^ { 3 } + x 21$$

Evaluate

$$x_{21}+\frac{8}{x}$$

Short Solution Steps

Calculate 2 to the power of 3 and get 8.

$$\frac{1}{2}\times \frac{2}{x}\times 8+x_{21}$$

Multiply \frac{1}{2} and 8 to get \frac{8}{2}.

$$\frac{8}{2}\times \frac{2}{x}+x_{21}$$

Divide 8 by 2 to get 4.

$$4\times \frac{2}{x}+x_{21}$$

Express 4\times \frac{2}{x} as a single fraction.

$$\frac{4\times 2}{x}+x_{21}$$

To add or subtract expressions, expand them to make their denominators the same. Multiply x_{21} times \frac{x}{x}.

$$\frac{4\times 2}{x}+\frac{x_{21}x}{x}$$

Since \frac{4\times 2}{x} and \frac{x_{21}x}{x} have the same denominator, add them by adding their numerators.

$$\frac{4\times 2+x_{21}x}{x}$$

Do the multiplications in 4\times 2+x_{21}x.

$$\frac{8+x_{21}x}{x}$$

Factor

$$\frac{xx_{21}+8}{x}$$