Question

3X ao quadrado menos 7x mais dois

Answer 1

3x^2-7x+2=0
delta=b^2-4ac
delta=(-7)^2-4.3.2
delta=49-24
delta=25
x=-b-/+ raiz de delta/2a
x=-(-7)-5/2.3
x=7-5/6
x=2/6 (:2)
x=1/3
x=-(-7)+5/2.3
x=7+5/6
x=12/6
x=2