Question

Find the product:

$\frac{7}{2}{x}^2\left(\frac{4}{7}x+2\right)$

Answer 1

$$\begin{gathered} =\frac{7}{2}{\mathrm{x}}^2\times \frac{4}{7}\times \mathrm{x}+\frac{7}{2}{\mathrm{x}}^2\times 2 \\ =\frac{7}{2}\times \frac{4}{7}\times {\mathrm{x}}^2\times \mathrm{x}+\frac{7}{2}\times 2\times {\mathrm{x}}^2 \\ =2\times {\mathrm{x}}^{(2+1)}+7{\mathrm{x}}^2 \\ =2{\mathrm{x}}^3+7{\mathrm{x}}^2 \end{gathered}$$