Question

Help me complete the square. ​

Answer 1

k=
`√(129)`-10=1.357816691600547or k=
`-√(129)`-10=-21.35781669160055

Explanation:

k^2-20k=29 |+100

k^2-20k+100=29=100

k^2-2x10xk+(-10)^2=129

(k-10)^2=129

|k-10|=
`√(129)`

case 1 k is a positive number

case 2 k is a negative number

hope this helps