SOLUTION: Use the qadratic formula to find the solutions to the equation. -x^2-x=7
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Question 289785: Use the qadratic formula to find the solutions to the equation. -x^2-x=7
Answer by j1mmy94(14) (Show Source): You can put this solution on YOUR website!
The original quadratic equation:
First you have to get the quadratic equation to equal to 0.
So you have to subtract 7 on both sides. You should get
It doesn't seem like the quadratic equation can be easily factored.
We have to use the quadratic formula which is
In our case,
a= -1
b= -1
c= -7
Plug in the values for the variables.
Simplify the equation:
The discriminant is less than zero, we can now tell that the solutions are imaginary and should include the symbol i.
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