can someone check me?
PLEASE HELP

Question

anonymous · Answer

Identify which equation is a quadratic equation.
i think the answer is y + x2 = (x − 2)(x + 7)

anonymous · Answer

the other choices are
y = 3x + 4
y = −4x(x − 4) + 2x

y + 3 = (x + 12)(x2 + 2)

anonymous · Answer

i just need to know if it is right or wrong

anonymous · Answer

It's wrong :)

anonymous · Answer

okay thanks

anonymous · Answer

would it be y + 3 = (x + 12)(x^2 + 2) ? @PeterPan

anonymous · Answer

Look, just simplify the equations and let y be on one side of the equation, and everything without y on the other.

For it to be quadratic, the largest exponent of the x's should be 2 :D

anonymous · Answer

The reason this doesn't work
y + x2 = (x − 2)(x + 7)
Is
y + x2 = x2 + 5x - 14
y = 5x - 14
Not quadratic, there is no 2-exponent.

anonymous · Answer

what about the equation i just asked about  y + 3 = (x + 12)(x2 + 2) @PeterPan

anonymous · Answer

Simplify it.

anonymous · Answer

i did?