Question

culcular o zero da função de f( x)-x²-x+12

Answer 1

f(x) -x^2-x+12
-x^2-x+12=0
delta = b^2-4.a.c
delta = (-1)^2-4.(-1).12
delta=1+48
delta=49
x=-b-/+ raiz de delta /2a
x=-(-1)-7/2.(-1)
x=1-7/-2.
x=-6/-2
x=3
x=-(-1)+7/2. (-1)
x=1+7/-2
x=8/-2
x=-4.