No. there is no *general* solutions for equations of polynomials of order 5 and greater! it is proven to be mathematically impossible. however in special cases such as
(x-1)(x-2)...(x-100)=0

FYI the equation doesn't need to be equal to 0 when you solve it.

You can just do something to both sides (such as subtract 5 on both sides) to make it equal to 0 and then solve.