Question

Awarding Medals!

Which equation is a quadratic equation?
y + 7 = −3x(4 − x) + 9x

y = −2x + 5

y + 2x3 = (2x − 2)(x + 5)

y − 9x = (x2 + 1)(5x − 1) + 3

Answer 1

who knows? lol
quadratic equations have an x with a 2 exponent, and nothing higher ^.^

Answer 2

make the operations and see what exponents u get

Answer 3

@julian25 I'm sure you know!

Answer 4

yes but dont take so much to multiply

Answer 5

a- 3x^2
b-2x
c-2x^3 and 2x^2
d-5x^3

Answer 6

so???????
u need a 2 like exponent nothing higer

Answer 7

Yea I guess

Answer 8

a b c or d?

Answer 9

a?

Answer 10

yes

Answer 11

Yay, you're always a good help. lol