The solutions to the equation 2x^2+x-1=2 are x=-3/2 or x=(the answer is 1)

ANSWER


EXPLANATION

The equation is



We group every term on the left hand side of the equation to obtain,


This implies that,



This is now a quadratic equation in

We multiply the coefficient of

which is 2, by the constant term which us

This gives


Two factors of -6 that adds up to 1 are


We split the middle term with the factors,


Thus, the equation becomes,



We factor to obtain,



We factor further to obtain,



This means that,





Hence the other root is

2160ft^3 i think you could use a formala to you out with this in the future

The decimal expansion would be .27 repeated