Expand the product $\left(- 10 c^{2} + 7\right) \left(- 2 c^{2} + 4\right)$.
Answer:
Expand the product $\left(- 2 b - 4\right) \left(5 b + 2\right)$.
Expand the product $\left(w + 3\right)^{2}$.
Expand the product $\left(- 12 J - 7\right) \left(9 J + 12\right)$.
Expand the product $\left(- s^{4} + 2 v^{4}\right) \left(s^{4} + 4 v^{4}\right)$.
Expand the product $\left(v - 4\right) \left(v + 4\right)$.