HELP Maths Question

The equation f(x) =0 has a repeated root, where f(x)=4x^2+px+q . When f (x) is divided by (x +1) the remainder is 1. Find the values of p and q.

Blah blah, what's your attempt? What thoughts do you have? This isn't a do-my-homework-for-me site.

my attempt got me to x=-1

then substituting that in got 3+q=p

was unsure how to go from there to get two sets of answers and add in the whole repeated root business

Blah blah, what's your attempt? What thoughts do you have? This isn't a do-my-homework-for-me site.

Great progess! It'd have been so useful for you to have included that in the OP. Oh well, now you know for next time!

You've got one equation in q and p, so you should be aiming to get another so you can solve simultaneously.

What can you say about the discriminant of the quadratic if they have equal roots?

woah didnt think of the discriminant what a spaz... the discriminant must be 0 yes?

so p-4q=0 ??

Correct.



Not so correct: discriminant is b^2 - 4ac = 0.

ya i deleted that so p^2-16q=0

Yes. Now sub in p = 3+q and solve.

woah thanks man you literally saved me