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| rev | Admin | (Created page with "'''Solution: B''' <math display = "block"> \begin{aligned} & 150=100 v+80 v^2 \\ & 80 v^2+100 v-150=0 \\ & v=\frac{-100 \pm \sqrt{100^2-4(80)(-150)}}{160} \\ & v=0.880199 \\ & i=0.136106 \\ & 1.136106=\left[1+\frac{i^{(4)}}{4}\right]^4 \\ & i^{(4)}=0.129664\end{aligned} </math> {{soacopyright | 2023 }}") | Nov 18'23 at 0:58 | +306 |