brincessjenelle brincessjenelle

25-01-2020
Mathematics

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

A. (2,-88)
B. (3,56)
C. (2,88)
D. (3,-56)

Respuesta :

surjithayer10otahza surjithayer10otahza

25-01-2020

Answer:

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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