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Drupady [299]
3 years ago
8

Consider the quadratic function:

Mathematics
2 answers:
Leokris [45]3 years ago
7 0
F(x)=x^2 - 4x - 4x +16-16-9
=x(x - 4) -4(x - 4) - 25
= (x-4)(x-4) -25
f(x)=(x-4)^2 - 25
the vertex is (4, -25)
the vertex occur at
x = - b/2a and y = (4ac - b^2)/4a
x= - - 8/(2*1)=4
y=[4*1*(-9) - (-8)^2]/(4*1)
= (-36-64)/4 = - 100/4 = - 25
sukhopar [10]3 years ago
7 0

the answer is ( 4 , - 25 )

:)

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