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x2+3i=0 so x2=-3i x=square root of (-3i)=square root (-3)square root (i) =i(square root(3)([1/(square root (2)](1+i) and i(square root(3)([-1/(square root (2)](1+i) You can multiply through by i if you want, but I left it since it shows you where the answer came from. Note: The square root of i is 1/square root 2(1+i) and -1/square root of 2 (1+i) to see this, try and square them!

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โˆ™ 2009-08-04 22:58:03
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Q: How can you solve the equation x2 plus 3i equals 0?
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Related questions

Let A equals 1 plus 2i and let C equals 5 plus 5i what is A-C?

-4-3i


What is conjugate of 2 plus 3i?

2+3i, 2-3i


What is the answer if you Find all the roots of the equation x4 - 2x3 plus 14x2 - 18x plus 45 0 given that 1 plus 2i is one of its roots.?

The four roots are:1 + 2i, 1 - 2i, 3i and -3i.


What is conjugate of -2 plus 3i?

- 2 - 3i


What is the conjugate of -2 plus 3i?

-2 - 3i


8 plus 6i-2 plus 3i?

(8+6i)-(2+3i)=6+3i 8+6i-2+3i=6+9i


What is the reciprocal of 1 plus 3i?

1/(1+ 3i)


What is the complex conjugate of 2 plus 3i?

[ 2 - 3i ] is.


If one of the roots of the quadratic equation is 1 plus 3i what is the other root?

The answer to the question, as stated, is that the other root could be anything. However, if all the coefficients of the quadratic equation are real numbers, then the other root is 1 minus 3i.


What is the additive inverse and the conjunction of NEGATIVE 2 plus 3i?

-2 + 3iThe additive inverse: -(-2 + 3i) = 2 - 3iThe conjugate: -2 - 3i


2 plus 5i plus 6 plus 3i?

I assume that "I" is a variable2+5i+6+3i7i+6+3i10i+616i is the answer


Solve by factoring 3x2 equals -9?

3x2 = -9 (divide both sides by 3) x2 = -3 (x would have to be the square root of -3) x = ±√-3 x = ±√3i Since you want to solve by factoring: x2 = -3 add 3 to both sides x2 + 3 = 0 x2 - 3i2 = 0 x2 - (√3i)2 = 0 Factor: (x - √3i)(x + √3i) = 0 x - √3i = 0 or x + √3i = 0 x = √3i or x = -√3i


What is the answer to x2 equals -9?

11


What is the sum of (7 plus 3i) plus (8 plus 9i)?

(7 + 3i) + (8 + 9i) = (7 + 8) + (3i + 9i) = (7 + 8) + (3 + 9)i = 15 + 12i Which can also be written as: 15 + 12i = 3(5 + 4i).


What is the factor of x2 plus 9?

x2 + 9 has no real factors. Its complex factors are (x + 3i) and (x - 3i) where i is the imaginary square root of -1.


Square root of -9?

Plus or minus 3i.


Solve the expression 3i 5-2i?

Expressions cannot be solved. Only equations or inequalities may be solved. Also, there is no symbol between 3i and 5.


Find the sum of negative 2 plus 3i and negative1 minus 2i?

(-2 + 3i) + (-1 - 2i) = -2 + 3i - 1 - 2i = -2 - 1 + 3i - 2i = -3 + i


What is the additive inverse of the complex number 8 plus 3i?

To form the additive inverse, negate all parts of the complex number → 8 + 3i → -8 - 3i The sum of a number and its additive inverse is 0: (8 + 3i) + (-8 - 3i) = (8 + -8) + (3 + -3)i = (8 - 8) + (3 - 3)i = 0 + 0i = 0.


What is the multiplicative inverse of 4 plus 3i?

Use the rules of division for complex numbers. Just divide 1 / (4 + 3i). This requires multiplying numerator and denominator of this fraction by (4 - 3i), to get a real number in the denominator.


Who bet the computers in calculation of complex numbers?

I would certainly bet on a computer. Try to solve (log z)^-3i. This is log z raised to the -3i power. A computer comes in handy.


What is S to the 3rd power- 3s to the 2nd power plus 9s-27?

s3 - 3s2 + 9s - 27 = s2(s - 3) + 9(s - 3) = (s - 3)(s2 + 9) or = (s - 3)(s2 - (9i2) = (s - 3)(s - 3i)(s + 3i) if you want to find for what values of s the expression equals to zero, then this happens when s - 3 = 0 or s - 3i = 0 or s + 3i = 0 s = 3, ±3i


Factor the following x2 plus 9?

x2 + 9 = (x + 3i)(x - 3i) The answer is based on a knowledge of imaginary and complex numbers where i2 = -1


What is the conjugate of -3i?

0 + 3i


What is the complex conjugate of 2-3i?

The complex conjugate of 2-3i is 2+3i.

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