If 2x+7 then 2(x+7/2) are factors
and thes means that
Do the substitution and find the answer for yourself.
Please no one do more of the working.
I anyone, including Lightning has a question, they will ask.
Lightning solved it by NOT solving it......!!!!!
Which brings to mind the old paradox...."If every man in the village who is not the barber shaves himself.....who shaves the barber ? "