Question

Determine os zeros e as coordenadas do vertice da função quadratica dada por f(x)=x²-2x-3.

Answer 1

-b ±√∆'
X = _____
2a

-b ±√bû - 4ac'
X = _______
2a

2 ±√-2û - 4 * 1 * -3'
X = ____________
2 * 1

2±√4 - (-12)'
X = __________
2

2±√16'
X = ______
2

2 ± (4 )
X = _____
2

-2
X1 = _____
2

X1 = -1

6
X2 = _____
2

X2 = 3