Question

As coordenadas do vértice da parábola y=x²-2x+1

Answer 1

Resposta:

a) y= x²-2x+1 a= 1 / b= -2/ c= 1

Xv= -b

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2a

Xv= -(-2)

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2(1)

Xv= 2

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2

Xv= 1

Yv= -∆. ∆=b²-4ac

----. ∆=-2²-4.1.1

4a. ∆= 4-4

∆= 0

Yv= -(0)

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4.(1)

Yv= -0

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4

Yv= 0

V(X,Y) = ( 1, 0)