Question

Select all of the following that are quadratic equations.
32 - 2x = 2x + 5
6x2+ 15x = 0
x3 - 3x2 + 1 = 0
9x - 2 = 0
7x2 + 5x - 2 = 0
5x - 1 = 2x + 7

Answer 1

Quadratic just means that the degree of the polynomial is 2, that is the highest exponent of x is 2.

Answer 2

so everything that is squared ?

Answer 3

Yes, but can't contain anything cubed or to the forth etc.

Answer 4

*fourth

Answer 5

certain cubes and such are quadratic; just in disguise :)

Answer 6

a quadratic equation is an equation that can be written in ax^2+bx+c=0 from

Answer 7

Group Sensei? lol

Answer 8

Let me guess: Group Goddess comes after that...

Answer 9

second,3th and 5th