Question

Will give medal, please help!!!! How do I solve
(k-7)^2 +6(k-7)+10 using the quadratic formula?

Answer 1

I would first distribute and then combine like terms
After that, we can use the quadratic formula

Answer 2

okay but the answer is supposed to be 4 plus or minus imaginary i

Answer 3

I tried using the substitution method but got a completely different answer

Answer 4

hmm, I'm getting that. so you substituted \(x = k -7\) and got a quadratic in \(x\).

Answer 5

yes

Answer 6

\[x^2 + 6x + 10\]did you use the quadratic formula for this?

Answer 7

when I substituted I got the x^2 +6x +10=0

Answer 8

Then used that equation in the quadratic formula

Answer 9

You should get \(x = -3 \pm i\). But remember that is not \(k\).

Answer 10

But what do you do with that -3 plus or minus imaginary i then?

Answer 11

You use \(x = k-7\) again.

Answer 12

\[\Rightarrow k-7 = -3 \pm i\]

Answer 13

Okay I got it thankyou

Answer 14

No problem. :)