Which can not be a value for x? I need help plz

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10

Worth 100 points need the answers asap first row -x^2 2x^2 (x/2)^2 x^2 x is less than 2 x is greater than 2 x is less than or equal to 2 x is greater than or equal to 2 second row -5 -5/2 4 5 •2 is less than x& x is less than 4 •2 is less than or equal to x & x is less than or equal to 4 •2 is less than or equal to x& x is less than 4 •2 is less than x& x is less than or equal to 4

Jeremy wants to determine the number of solutions for the equation below without actually solving the equation.