What is 66x4 plus 45x plus 56 solved?
There's nothing to solve, because there's no equation there. All
we have is a
4th degree expression in 'x'. Its numerical value depends on the
value of 'x'.
An algebra teacher may ask you to factor it, but then the
question would come
from the teacher, not from the expression.
If there were an 'equals' sign ( ' = ' ) somewhere here, then we
would have an
equation, and there would be something to solve.