n2+6n-11=0
(n - 11) (n+1) = 0
|
x1 = 11| x2 = - 1
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n^2+6n-11=0
n^2+6n=11
n^2+6n+(6/2)^2=11+(6/2)^2
n^2+6n+9=11+9
√(n+3)^2= √20
n+3= =2±√5
x= 2√5 -3
x= 2√5 +3
n2+6n-11=0
(n - 11) (n+1) = 0
|
|
x1 = 11| x2 = - 1