SOLUTION: Use the quadratic formula to solve the equation; 2x^2-x=-7

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Question 266474: Use the quadratic formula to solve the equation; 2x^2-x=-7
Answer by JBarnum(2146)   (Show Source): You can put this solution on YOUR website!

A=2 B=-1 C=7
unfortunatly there are no real numbers that "x" can equal, there are however imaginary numbers.
Solved by pluggable solver: SOLVE quadratic equation with variable
Quadratic equation (in our case ) has the following solutons:



For these solutions to exist, the discriminant should not be a negative number.

First, we need to compute the discriminant : .

The discriminant -55 is less than zero. That means that there are no solutions among real numbers.

If you are a student of advanced school algebra and are aware about imaginary numbers, read on.


In the field of imaginary numbers, the square root of -55 is + or - .

The solution is

Here's your graph:
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