Remove parentheses.
\[10{m}^{}\times -7{n}^{4}-8{p}^{3}-20+10+{p}^{3}\]
Simplify \(10{m}^{}\times -7{n}^{4}\) to \(-70{m}^{}{n}^{4}\).
\[-70{m}^{}{n}^{4}-8{p}^{3}-20+10+{p}^{3}\]
Collect like terms.
\[-70{m}^{}{n}^{4}+(-8{p}^{3}+{p}^{3})+(-20+10)\]
Simplify.
\[-70{m}^{}{n}^{4}-7{p}^{3}-10\]
-70*m^*n^4-7*p^3-10