The Strategic Defense Initiative “Star Wars” was a costly: a. Plan for international alliance
b. Bomber
c. Nuclear missile defense system
d. Communications system

Option: c. Nuclear missile defense system  

Explanation:

The Strategic Defense Initiative was a U.S. missile defense program which played a prominent role in the United States and Soviet relations in the 1980s and is often associated with helping to end the Cold War. The Strategic Defense Initiative was an enthusiastic plan for building a high-tech system to damage opponent missiles before they could enter the United States. Analysts called it Star Wars, based on lasers and satellite technology.

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