Identify the quadratic function(s). (Select all that apply).

y(y + 4) - y = 6

(3x + 2) + (6x - 1) = 0

4b(b) = 0

3a - 7 = 2(7a - 3)

Question

Identify the quadratic function(s). (Select all that apply).

y(y + 4) - y = 6

(3x + 2) + (6x - 1) = 0

4b(b) = 0

3a - 7 = 2(7a - 3)

phi · Answer

quadratic means the "variable" has an exponent of 2
the highest exponent must be 2, and there has to be at least one term with an exponent of 2.

prestonsetzer1 · Answer

?

phi · Answer

start with this one
(3x + 2) + (6x - 1) = 0

what is the exponent on the "x" ?  any idea ?

prestonsetzer1 · Answer

I don't know how to do these.

phi · Answer

do you know that 
$ x^2 $ means x*x ?

prestonsetzer1 · Answer

yes

phi · Answer

also
$$ x^1 = x$$
usually we don't bother to write the exponent of 1
but we can put it in

phi · Answer

exponent means the little number we put in the upper right of the x

prestonsetzer1 · Answer

I got it now thanks

phi · Answer

now look at
3x + 2

the "x" has an exponent (if we write it).  what is it ?  any idea ?