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20 December, 18:21

What is the vertex of the function 7x^2 - 28x-60?

A. (2,-88)

B. (3,56)

C. (2,88)

D. (3,-56)

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Answers (1)
  1. 20 December, 21:32
    0
    Step-by-step explanation:

    7x²-28x-60=7 (x²-4x+4-4) - 60

    =7 (x²-4x+4) - 28-60

    =7 (x-2) ²-88

    vertex is (2,-88)
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