a
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If we have to find a
We do
![{a}^{4} + 4 {a}^{4} - 5 = 0 \\ \\ 5 {a}^{4} - 5 = 0 \\ \\ 5 {a}^{4} = 5 \\ \\ {a}^{4} = \frac{5}{5} \\ \\ {a}^{4} = 1 \\ \\ a = \sqrt[4]{1} \\ \\ a = 1](https://tex.z-dn.net/?f=+%7Ba%7D%5E%7B4%7D++%2B+4+%7Ba%7D%5E%7B4%7D++-+5+%3D+0+%5C%5C++%5C%5C+5+%7Ba%7D%5E%7B4%7D++-+5+%3D+0+%5C%5C++%5C%5C+5+%7Ba%7D%5E%7B4%7D+%3D+5+%5C%5C++%5C%5C+%7Ba%7D%5E%7B4%7D+%3D++%5Cfrac%7B5%7D%7B5%7D++%5C%5C++%5C%5C+%7Ba%7D%5E%7B4%7D+%3D+1+%5C%5C++%5C%5C+a+%3D++%5Csqrt%5B4%5D%7B1%7D++%5C%5C++%5C%5C+a+%3D+1 "{a}^{4} + 4 {a}^{4} - 5 = 0 \\ \\ 5 {a}^{4} - 5 = 0 \\ \\ 5 {a}^{4} = 5 \\ \\ {a}^{4} = \frac{5}{5} \\ \\ {a}^{4} = 1 \\ \\ a = \sqrt[4]{1} \\ \\ a = 1")
We do
rup10:
wrong answer
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