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Number of solution(s) of the equation ab...

Number of solution(s) of the equation `absz^2+7z=0` is/are

A

1

B

2

C

4

D

6

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The correct Answer is:
B
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PATHFINDER-COMPLEX NUMBER-QUESTION BANK
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  4. If z1=9y^2-4-10ix,z2=8y^2-20i where z1=barz2 then z=x+iy is equal to

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  5. Let z1,z2,z3 be three points on absz=1 let theta1,theta2 and theta3 be...

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  6. If z1,z2 are two non zero complex numbers such that z1/z2+z2/z1=1 then...

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  10. Let z1 nez2 are two points in the Argand plane if a abs(z1)=b abs(z2) ...

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  11. The least positive integer n for which ((1+i)/(1-i))^n=2/pisin^(-1)((1...

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  12. If x=2+5i then the value of the expression x^3-5x^2+33x-49 is

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  13. The square root of (1+i) is

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  14. The curve represented by Im(z^2)=c^2 is

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  15. If z be a complex number satisfying z^4+z^3+2z^2+z+1=0 then absz is eq...

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  16. If omega is complex cube root of unity then (3+5omega+3omega^2)^2+(3+3...

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  17. Let 0lealphalepi/2 be a fixed angle.if p=(costheta,sintheta) and Q=(co...

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  18. A man walks a distance of 3 units from the origin towards the north ea...

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  19. z^2+zabsz+absz^2=0 then the locus of z is

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  20. The polynomial x^6+4x^5+3x^4+2x^3+x+1 is divisible by

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