\(\mathrm{V}_{1}-\mathrm{V}_{2}=-\int_{-5}^{1}(20 \mathrm{x}+10) \mathrm{d} \mathrm{x}\)
\(\mathrm{V}_{1}-\mathrm{V}_{2}=-\left(10 \mathrm{x}^{2}+10 \mathrm{x}\right)_{-5}^{1}\)
\(\mathrm{V}_{1}-\mathrm{V}_{2}=10(25-5-1-1)\)
\(V_{1}-V_{2}=180\, V\)