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Vladimir [108]
3 years ago
9

What is the vertex A,B,C or D

Mathematics
1 answer:
matrenka [14]3 years ago
4 0
(C) (-2, -36) . . . . . . is the appropriate choice

_____
An easy way to tell is to let a graphing calculator show you.

Or, you can rearrange the equation to vertex form.
  f(x) = 5(x² +4x) -16
    = 5(x² +4x +4) -16 -5*4 . . . . complete the square
    = 5(x +2)² -36
So, the vertex is (-2, -36).

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4{[5 (x-3)+2]-3 [2 (x+5)-9]}
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parenthasees exponents mult/division additon/subtraction

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x-3 and x+5 we can't do anything with so next
5(x-3)=5x-15

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