What happened in poland in 1989?
a) many solidarity candidates were voted out of office.
b)workers finally were given the right to form unions.
c)the polish government banned all workers’ unions.
d)lech walesa became the first freely elected president.

Lech Walesa became the first freely elected president.

answer

explanation

the given equation is

we can rewrite this as:

let

then the equation becomes:

the factors of 8 that sum up to -9 are {-1,-8}

we split the middle term with these factors to obtain,

we factor by grouping to obtain:

apply the zero product property to get:

but