haileemackk
Which equation is a quadratic equation?
3x − y = 8x + 2
y = 7x(5 − 2x) + 9
7x2 + y = (3 + x)(7x − 1)
y − 3 = (x2 − 3)(8x + 3)
I think it's y = 7x(5 − 2x) + 9 because it looks like it's in standard form but I just want to make sure.
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nubeer
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yes..
johnweldon1993
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You would be correct :)
haileemackk
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Okay, thanks!
sami-21
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hre are more than one quadratic equations above.
nubeer
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nop.. there are not.
johnweldon1993
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@sami-21 no...that last equation would be a cubic
sami-21
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7x2 + y = (3 + x)(7x − 1)
y = 7x(5 − 2x) + 9
nubeer
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7x^2 cancels up if u evaluate this option
sami-21
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ok its one
johnweldon1993
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correct @nubeer