Question

As coordenadas do vértice y=x²+4x

Answer 1

Resposta:

a) y= 2x²-5x+2 a= 1 / b= 4/ c= 0

Xv= -b

----

2a

Xv= -(4)

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2(1)

Xv= -4

--

2

Xv= -2

Yv= -∆ ∆=b²-4ac

---- ∆=4²-4.1.0

4a ∆= 16-0

∆= 16

Yv= -(16)

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4.(1)

Yv= -16

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4

Yv= -4

V(X,Y) = ( -2, -4)