Question

Calcule as raízes da função y=3x² -6x.

Answer 1

y=3x^2-6x;a=3,b=-6,c=0
∆=b^2-4ac
∆=6^2-4×3×0
∆=36-0
∆=0
x=(-b+-√∆)/2a
x=(-3+-√36)/2×3
x=(-3+-6)/6
x1=(-3-6)/6=-3/2
x2=(-3+6)/6=1/2