Which are the roots of the quadratic function f(q) = q2 – 125? check all that apply. q = 5 q = –5 q = 3 q = –3 q = 25 q = –25

The given options are not roots of q(x)

Step-by-step explanation:

To find the roots of the given quadratic equation

we replace f(q) with 0  and solve for q

Add 125 on both sides

take square root on both sides

 and  

The given options are not roots of q(x)

the answer is f(x)=2x-1

step-by-step explanation:

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional