Me with this math will give stars, , and josh solved the equation below. is his solution correct? explain why or why not. ( show work) x^2-6x-7=0 x^2-6x+7\x^2-6x+9=7+9 (x-3)^2=16 x-3=16 x=19 x-3=-16 x=-13 i am pretty sure he messed up when he decided he needed to do x-3 twice, because when there is a +/- sign is the only time you would do x-3 then x+3, right?