anonymous
  • anonymous
Which point is the vertex of the parabola? a: (-2, -3) b: (2, 3) c: (-2, 3) d: (2, -3)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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SolomonZelman
  • SolomonZelman
It all depends on the parabola....
anonymous
  • anonymous
thats all they gave me
anonymous
  • anonymous
well they gave me this too

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SolomonZelman
  • SolomonZelman
what this?
anonymous
  • anonymous
y = x2 + 4x + 1
SolomonZelman
  • SolomonZelman
oh, that is much better!
SolomonZelman
  • SolomonZelman
y=x²+4x+1 you have to complete the square in this case.
SolomonZelman
  • SolomonZelman
Let me ask you this, if you had \(\large\color{black}{ \displaystyle y=x^2+4x+\text{___} }\) then what number would you want in place of a blank to make this trinomial/expression a perfect square?
anonymous
  • anonymous
1
SolomonZelman
  • SolomonZelman
no, you wouldn't want a "1"..... you need this expression to factor into two equal parts.
SolomonZelman
  • SolomonZelman
well (x+2)(x+2) would give you the first term x² and second term 4x and a third term 4, is this right or not?
anonymous
  • anonymous
right

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