What do you think about Japan? How did it achieved the title of 'most advanced civilization ever'-?​

Japan is an extremely advanced country, there are many reasons why japan acheived the title. Eg- the maglev train, this is the train being constructed in japan and is one of the fastest trains, it has never even been late by a second or two But I wont say japanese is the smartest country but it is definetley one of the most advanced counties in the worldbesides every countries have theyre own pros and cons so who am i to judge?This one example itself shows how advanced and smart japanese in particular arehope this gives u a new insight about japan

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