Answer:
k=[tex]\sqrt{129}[/tex]-10=1.357816691600547or k=[tex]-\sqrt{129}[/tex]-10=-21.35781669160055
Step-by-step explanation:
k^2-20k=29 |+100
k^2-20k+100=29=100
k^2-2x10xk+(-10)^2=129
(k-10)^2=129
|k-10|=[tex]\sqrt{129}[/tex]
case 1 k is a positive number
case 2 k is a negative number
hope this helps
