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Write the quadratic function in the form f (x) = a (x - h)? +k
Then, give the vertex of its graph.
f(x) = -3x² +30x - 71 help pls

Write the quadratic function in the form f x a x h k Then give the vertex of its graph fx 3x 30x 71 help pls class=

Respuesta :

really226

Answer:

f(x) = -3(x - 5)^2 + 4

vertex (5,4)

Step-by-step explanation:

f(x) = -3x² +30x - 71

f(x) = -3(x² +-10x) - 71

f(x) = -3(x² +-10x+5^2-5^2) - 71

f(x) = -3(x² +-10x+5^2) -3(-5^2) - 71

f(x) = -3(x² +-10x+5^2) + 4

f(x) = -3(x - 5)^2 + 4

vertex (5,4)

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