x is a variable which means it can take any value. If we do not know what either of these statements is equal to (i.e. if they are not able to be written in the form of an equation) then we can not solve for a specific value of x.
4x-618 = -614
16x
the answer to this is 4x + 57 (assuming that the 4x in the question is algebra)
4x^2 + 3
4x + 3 doesn't factor. It is in its simplest form.
(4x + 3)(4x + 3) (4x + 3)2
4x + 16 + 1 = 4x + 17 which cannot be factorised.
The derivative of 2x2 + 4x + 8 is 4x+4.
4x + 20y
(4x+5)(4x+5)
8x + 15
It is -4x - 4