Question

Usa formula General para resolver la función:
F(x)=X^2-2x-5

Answer 1

f(x)=x^2-2x-5
f'(x)=2x-2x
f'(x)=0

Answer 2

....-b±√b²4ac
x=——————
............2a

a=1. b=2. c=5

....-2±√(2)²[4(1)(5)]
x=————————
..............2(1)

....-1±√4[(4)(5)]
x=——————
............2

.....-1±√(4)(20)
x=——————
.............2

.....-1±√80
x=————
..........2

......-1+8.94
x1=————
............2

.......7.94
x1=———
..........2

x1=3.97

.......-1-8.94
x2=————
.............2

.......-9.94
x2=———
...........2

x2=-4.97