(s+s×s):8=s
Va rog ajutatima


Răspuns :

ai asa (s+s*s):8=s
s+s²=8s
s²-7s=0
ecuatie de gradul 2
Δ=b²-4ac
Δ=49
√Δ=7

s₁=(-b+√Δ)/2=14/2=7
s₂=(-b-√Δ)/2=0