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Algebra Level 2

\[ \large \frac a{a^2+1} = \frac 1 3, \ \ \ \ \ \frac {a^3}{a^6+a^5+a^4+a^3+a^2+a+1} = \ ? \]

\[ \frac 1 {36} \] \[ \frac 1 {29} \] \[ \frac 1 {25} \] \[ \frac 1 {33} \]

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Excel in math and science

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by Benedict Dimacutac

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