Question

In $\frac{-2a^{3}b{c}^{-4}}{5}$ write down the coefficient of $-a^2{c}^2$.

Answer 1

$\frac{-2a^{3}b{c}^{-4}}{5}\Rightarrow \frac{2ab{c}^{-6}}{5}\times -a^2{c}^{2}coefficientof-a^2{c}^2=\frac{2ab{c}^{-6}}{5}$.