The roots of imaginary numbers for solving equations -5x square + 8x-5
-5 * x2 + 8 * X-5 = 0?
We can directly use the binary root formula, x1,2 = (- B plus minus root sign deta) / 2A
If there is a negative number in the root sign, you can directly correct it by adding I
For example, 2 + radical - 4 becomes 2 + 2I
RELATED INFORMATIONS
- 1. If the intersection of the line y = K (x-1) + 1 and the circle x ^ 2 + y ^ 2-4x-12 = 0 is in the third quadrant, then the value range of the real number k is? Yes?
- 2. As shown in the figure, the center of the small circle is at the origin, the radius is 3, the center coordinates of the big circle are (a, 0) and the radius is 5. If there are two circles, then the value range of a is______ .
- 3. The equation of a circle whose center is at the origin and whose circumference is divided into 1:2 parts by a straight line 3x + 4Y + 15 = 0 is______ .
- 4. If the origin is outside the circle x ^ 2 + y ^ 2 + 2x + 4y-a = 0, then the value range of a is 0
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- 7. Find the maximum and minimum of the function y = sin (x + π / 6) + cosx, (0 ≤ x ≤ π)
- 8. Known K
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- 11. The square root of an imaginary number is still an imaginary number. What's wrong?
- 12. What is an imaginary number? Is the square root of a negative real number an imaginary number? Some people say that negative numbers have no square root. Others say that the square root of negative numbers is imaginary. Which one is right?
- 13. Thank you so much for telling me the meaning of imaginary root
- 14. It is known that the set a = {a} has a unique real solution to the equation x & # 178; - 2 / 2 x + a = 1 of X}, and the set a is represented by enumeration
- 15. Is it possible for the roots of a quadratic equation of one variable of complex number to be a real number and an imaginary number? I just learned plural. I hope you can take care of me!
- 16. What are real numbers and imaginary numbers?
- 17. Does the equation of imaginary number have a real root and an imaginary root?
- 18. How to find the root of imaginary number and the number of roots of higher order equation? For example, if x ^ 3-4x ^ 2-3x + 2 = 0, how can we know that it has several imaginary solutions and several real solutions?
- 19. Help me look at some math problems! It's a process (2xy-y) - (- y + YX) =? 5 (a squared b-3ab squared) - 2 (a squared b-7ab squared) =? First simplify, then evaluate (4a + 3a square-3 + 3A cube) - (- A + 4A cube), where a = - 2: 1 2X squared y-2xy squared - [(- 3x squared y squared + 3x squared y) + (3x squared y squared - 3xy squared)] Where x = - 1, y = 2
- 20. In the quadrilateral ABCD, EF divides AB into three equal parts and Mn divides DC into three equal parts