What are the solutions to the system of equations
{-x+y=4
{y+12=x^2+x

Step-by-step explanation:

         ............................................ (1)

 ............................................ (2)

now equate both (1) and (2)

now substitute the values of x ,

when , y becomes 0

when  , y becomes 8

so, solution set:

and

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step-by-step explanation: