Question

Wylicz a :
n = a - b ÷ a

Answer 1

N = a - b ÷ a
n= 1 -b/a
n-1=-b/a
a(n-1)=-b
a= -b/(n-1)

Answer 2

N = a - b ÷ a

mnożymy wszystko razy a

an=a^2-b
a^2-an-b=0

delta = n^2+4b

a1= [ n-sqrt(n^2+4b) ] / 2
a2 =[ n+sqrt(n^2+4b) ] / 2