anonymous
  • anonymous
Identify which equation is a quadratic equation. y = 3x + 4 y + x2 = (x − 2)(x + 7) y = −4x(x − 4) + 2x y + 3 = (x + 12)(x2 + 2)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
quadratic is a equation in which highest power of x is 2 so simplify each and see which equation has highest power of x 2
anonymous
  • anonymous
this is like the twelfth time i have seen this exact same rather silly problem where does it come from?
anonymous
  • anonymous
if you multiply this \[y = −4x(x − 4) + 2x\] out, you will get a quadratic

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anonymous
  • anonymous
this one \(y = 3x + 4\) is linear,there is no square
anonymous
  • anonymous
Okay, thank you! :)
anonymous
  • anonymous
this one \(y + x^2 = (x − 2)(x + 7) \) looks like it could be a quadratic, but is isn't because the \(x^2\) term on both sides will cancel
anonymous
  • anonymous
this one \(y + 3 = (x + 12)(x^2 + 2) \) if you multiply out you will get an \(x^3\) term, so not quadratic
anonymous
  • anonymous
i'd still like to know where this silly question comes from and why everyone seems to have it

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