Question

Select all of the following that are quadratic equations.



x^2 - 2x = 4x + 1
x^3 - 6x^2 + 8 = 0
5x - 3 = 0
2x^2+ 12x = 0
5x - 1 = 3x + 8
9x^2 + 6x - 3 = 0

Answer 1

@xoya you're good at this.

Answer 2

Highest power of x should be 2 for a quadratic equation ( I guess u already know that :))

Answer 3

LOL okay wait give me 5 minutes :D

Answer 4

haha ok thanks

Answer 5

One, fourth and sixth :D

Answer 6

Okay? :)

Answer 7

Wouldn't those ones be Cubic?

Answer 8

http://www.mathsisfun.com/definitions/quadratic-equation.html

Answer 9

Ohh. nvm. Thanks @jdoe0001

Answer 10

Thanks to everyone!

Answer 11

Hahaha welcome :D