Question

Multiply $15a^{2}b+6c$ by $-5ab$

Answer 1

Given $15a^{2}b+6c$ by $-5ab$

Multiply $15a^{2}b+6c$ by $-5ab$ i.e,

$$\begin{gathered} (15a^{2}b+6c)\times (-5ab) \\ (15a^{2}b\times -5ab)+(6c\times (-5ab) \\ -75a^3{b}^2-30abc \end{gathered}$$ by $-5ab$

Hence, the multiplication of $15a^{2}b+6c$ by $-5ab$ is $-75a^3{b}^2-30abc$