Question

The sum of the roots of the equation x^2+ x=2 is:10-1

Answer 1

We notice that the given equation can be written as:

`\begin{gathered} x^2+x-2=0 \\ \text{factoring } \\ (x+2)\text{ (x-1)=0} \end{gathered}`

Then the roots are -2 and 1 , if we add them we get -1.