Question

Calcule as raizes das equaçoes (U=R)
3x²=15 x

Answer 1

3x^2=15x
3x^2-15x=0
delta=b^2-4ac
delta=(-15)^2-4.3.0
delta=225-0
delta=225
x=-b-/+ raiz de delta/2a
x=-(-15)-15/2.3
x=15-15/6
x=0/6
x=0
x=-(-15)+15/2.3
x=15+15/6
x=30/6
x=5
S={0, 5}