Question

$$\frac { 1 } { 35 \cdot ( 3 a - 7 b - c ) ^ { 2 } }$$

Evaluate

$\frac{1}{35\left(3a-7b-c\right)^{2}}$

Expand

$\frac{1}{35\left(3a-7b-c\right)^{2}}$