Question

can someone check me?
PLEASE HELP

Answer 1

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

Answer 2

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

y + 3 = (x + 12)(x2 + 2)

Answer 3

i just need to know if it is right or wrong

Answer 4

It's wrong :)

Answer 5

okay thanks

Answer 6

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

Answer 7

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

Answer 8

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.

Answer 9

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

Answer 10

Simplify it.

Answer 11

i did?