Question

A polynomial has one root that equals 5 - 7i. Name one other root of this polynomial.

Answer 1

I have no clue at all. please help?? @jim_thompson5910 ?? :)

Answer 2

In general,

If a+bi is one root, then a-bi is automatically another root. These two roots are known as conjugate pairs.

Answer 3

okay so another root of the polynomial 5 - 7i
is 5 + 7i
???

Answer 4

you got it, not much else to it

Answer 5

oh okay great! thanks :)

Answer 6

oh okay great! thanks :)