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asked ago in Mathematics by (53.5k points)

If z1 , z2 ,z3 , z4 are roots of the equation a0z4 + a1z3 + a2z2 + a3z + a= 0, where a0 , a1 , a2 , a3 and a4 are real, then

(A)  bar (z1 , z2 , z3 , z4 are also roots of the equation 

(B)  z1 is equal to at least one of  bar (z2,  z3 , z4

(C)  bar(-z1 , -z2 ,- z3 , z4) are also roots of the equation

(D) None of the above.

1 Answer

+1 vote
answered ago by (21.2k points)
selected ago by
 
Best answer

Correct option (A)(B)

Explanation:

are the roots of the equation if z1 is real, then  bar z1 is also real and if  bar z1 is non real, then 1 z is also root because imaginary roots occur in conjugate pair.

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