Grade 11 Math Help Please!

For what integer values of k can each polynomial be factored? Explain!

a) x(squared) + kx + 4

b) x(squared) + 4x + k

c) x(squared) + kx + k

I fucking suck at math, how do I do this?!

 

I dont really remember polynomial's but do they have a range of numbers that work for each or just a single solution? might be able to help if you could anwser.

 

I'm guessing a range. :/

 

Ill try to figure it out for you, but i cant promise anything, if i find what i think is a solution i will edit this post.

 

Thanks!

 

answer to 1st one is 4 and 5 im 99.9999999 percent sure

 

Shouldn't this be in the homework help section?

 

That's the first one done for you.

All you need to do is find out what actually works in factorisation. Polynomials of the 2nd degree (i.e. quadratics) are rather easy; they're composed as Ax^2 + Bx + C. Notice what I've done in my solution, I've found out what AC and B are respectively, and then found values for k which suit the method of factorisation.

Use similar methods for the other two.