SOLUTION: solve the equation in real # system
real solutions of the equation are x=?
dont see why my tutor i was assigned cant do these, please help
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Question 641585: solve the equation in real # system
real solutions of the equation are x=?
dont see why my tutor i was assigned cant do these, please help
Found 2 solutions by Alan3354, MathTherapy:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
x = -0.25387410024
By graphical methods
Answer by MathTherapy(10551) (Show Source): You can put this solution on YOUR website!
solve the equation in real # system
real solutions of the equation are x=?
dont see why my tutor i was assigned cant do these, please help
---- Multiplying eq by 4 to clear the fractions
From calculations, was found to be a root of the equation.
----- ----- 4x + 1 = 0.
This means that one real solution is , or .
Using long division and dividing by 4x + 1, we get:
We now have: -----
Solving using the quadratic equation formula gives us a negative discriminant (), or 1 – 4 * 1 * 8, or 1 – 32, or - 31)
As a negative discriminant gives us 2 imaginary solutions, both of which DO NOT INTERSECT the x-axis, the 2 imaginary solutions are regarded as non-solutions, since we're looking for real solutions.
Therefore, the one and only REAL solution is , or .
I hope this helps you understand it better!!
Send comments and “thank-yous” to “D” at MathMadEzy@aol.com
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