Solve Q.No.17 If is the cube root of unity form an equation whose roots are 3 and 3 .No.18 Evaluate : omega ^ - 13 + omega ^ - 17 + 6 | 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

$$a ^ { - 1 } + a ^ { - 1 } + b$$

Evaluate

$b+\frac{2}{a}$

Factor

$b+\frac{2}{a}$