हल करना (a + 1)/(a ^ 2 + a + 1) + (a - 1)/(a ^ 2 - a + 1) + 2/(a ^ 4 + a ^ 2 + 1) | Equatix - Math Solver

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Example

3(r+2s)=2t-4

a⋅(b-2)=3b

3(r+2s)=2t-4

a⋅(b-2)=3b

Question

$$\frac{a+1}{a^{2}+a+1}+\frac{a-1}{a^{2}-a+1}+\frac{2}{a^{4}+a^{2}+1}$$