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Solve the equation x^4-5x^2+4=0....

Solve the equation `x^4-5x^2+4=0`.

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CENGAGE PUBLICATION-COMPLEX NUMBERS AND QUADRATIC EQUATIONS-All Questions
  1. Solve (x^2-5x+7)^2-(x-2)(x-3)=1.

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  2. If alpha is a complex constant such that alphaz^2+z+baralpha=0 has are...

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  3. Solve the equation x^4-5x^2+4=0.

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  4. The complex number z satisfies z+|z|=2+8i. find the value of |z|-8

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  5. Solve (x^2-2x-3)/(x+1)=0.

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  6. If omega is a complex cube root of unity and (1+omega)^7=A+Bomega then...

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  7. Solve (x^3-4x)sqrt(x^2-1)=0.

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  8. For what value of x, The complex number sinx+icos2x and cosx-isin2x ar...

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  9. Solve (2x-3)/(x-1)+1=(9x-x^2-6)/(x-1)dot

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  10. The points, z1,z2,z3,z4, in the complex plane are the vertices of a pa...

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  11. Using differentiation method check how many roots of the equation x^3-...

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  12. z=x+iy and w=(1-iz)/(1+iz) and |w|=1 ,prove that z is purely real

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  13. Let ...

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  14. |z-4| < |z-2| represents the region given by: (a) Re(z) > 0 (b) Re...

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  15. Draw the graph of y=x^(4)+2x^(2)-8x+3 Find the number of real roots ...

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  16. If z=[(sqrt(3)/2)+i/2]^5+[((sqrt(3))/2)-i/2]^5 , then a. R e(z)=0 ...

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  17. How many real solutions does the equation x^7+14x^5+16x^3+30x-560=0 h...

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  18. The complex numbers z=x+iy which satisfy the equation |(z-5i)/(z+5i)|=...

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  19. Solve sqrt(3x^2-7x-30)-sqrt(2x^2-7x-5)=x-5.

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  20. The smallest positive integer n for which ((1+i)/(1-i))^n=1 is (a)8...

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