Question

find a quadratic equation with roots -1+4i and -1 - 4i

i need step by step...

Answer 1

hint :
when 'a' is a root, (x-a) is the factor.
so what will be the factor if -1+4i is the root ?

Answer 2

if the roots are -1+4i and -1-4i, then we can write it in the following form
(x+(-1+4i))(x(-1-4i))=0
or we can even write it in the general form i.e. x^2-(a+b)x+ab where a and b are the roots of the equation
x^2-(-1+4i-1-4i)x+(-1+4i)(-1-4i)
thus by solving this we get the equation as
x^2+2x+17=0
i think so

Answer 3

ahh idk math overwhelms me. :(

Answer 4

what did you say just now

Answer 5

what do you mean?

Answer 6

nothing

Answer 7

well thank you :)
i gave u a medal

Answer 8

thanks for the medal