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If x=-5+2sqrt(-4) , find the value of x^...

If `x=-5+2sqrt(-4)` , find the value of `x^4+9x^3+35 x^2-x+4.`

A

0

B

`-160`

C

160

D

`-164`

Text Solution

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The correct Answer is:
b
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OBJECTIVE RD SHARMA ENGLISH-COMPLEX NUMBERS -Exercise
  1. If "Im"(2z+1)/(iz+1)=-2, then locus of z, is

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  2. about to only mathematics

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  3. If x=-5+2sqrt(-4) , find the value of x^4+9x^3+35 x^2-x+4.

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  4. If z(1),z(2), z(3) are vertices of an equilateral triangle with z(0) i...

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  5. If z(1) , z(2) are two complex numbers such that I m (z(1) + z(2)) = 0...

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  6. If z^2+z|z|+|z^2|=0, then the locus z is a. a circle b. a straight ...

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  7. If log(sqrt3) ((|z|^(2)-|z|+1)/(2+|z|)) lt 2 ,then the locus of z is

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  8. Let g(x) and h(x) are two polynomials such that the polynomial P(x) =g...

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  9. If g(x) and h(x) are two polynomials such that the polynomials P(x)=g(...

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  10. if x(k) = cos pi/3^(k) + isin pi/3^(k) , find x(1)x(2)x(3)……oo (...

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  11. If (a1+ib1)(a2+ib2).....(an+ibn)=A+iB, then (a1^2+b1^2)(a2^2+b2^2).......

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  12. If (a(1)+ib(1))(a(2)+ib(2))………………(a(n)+ib(n))=A+iB, then sum(i=1)^(n) ...

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  13. If cosalpha+2cosbeta+3cosgamma=sinalpha+2sinbeta+3singamma=0,t h e nt ...

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  14. If alpha,betaandgamma are the cube roots of P(p)lt0), then for any x, ...

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  15. prove that tan(i" In"((a-ib)/(a+ib)))=(2ab)/(a^(2)-b^(2)) (where a, ...

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  16. Find the relation if z1, z2, z3, z4 are the affixes of the vertices of...

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  17. The locus of the points representing the complex numbers z for which |...

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  18. For n=6k, k in z, ((1-isqrt(3))/(2))^(n)+((-1-isqrt(3))/(2))^(n) has t...

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  19. The product of all values of (cosalpha+isinalpha)^(3//5) is

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  20. If C^(2)+S^(2)=1, then (1+C+iS)/(1+C-iS) is equal to

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