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let z1 z2 z3 z4 are roots of equation z^6+z^4+z^3+z^2+1=0 such that zr^3 +1 is not equal to 0 for r={1,2,3,4}.then (z1)^99 + (z2^)99 +(z3)^99 +(z4)^99 is equal to

let z1 z2 z3 z4 are roots of equation z^6+z^4+z^3+z^2+1=0 such that zr^3 +1 is not equal to 0 for r={1,2,3,4}.then (z1)^99 + (z2^)99 +(z3)^99 +(z4)^99 is equal to
 

Grade:12

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