Question

m la putetea a 2-3m+1=-1

Answer 1

E o ecuatie de gradul 2:
m²-3m+1=-1
m²-3m+2=0
Putem afla delta si cele doua solutii sau putem sa descompunem.O sa aleg a doua varianta pt ca e mai simplu.
m²-2m-m+2=m(m-2)-(m-2)=(m-2)(m-1)
m-2=0⇒m₁=2
m-1=0⇒m₂=1
S:m∈{1,2}

Answer 2

m²-3m+1+1=0
m²-3m+2=0
a=1
b=-3
c=2
∆=b²-4ac=(-3)²-4·2=9-8=1
m1,2=(-b±√∆)/2a=(3±√1)/2=(3±1)/2
m1=(3+1)/2=4/2=2
m2=(3-1)/2=2/2=1
Succes!! :*