A+b=0 ab=-36 what is the value of a-b?

Step-by-step explanation:

What times what = -36?

6*-6 can = -36 and

6+-6 = 0 too

So the value of a would be 6 and b be -6

And then a - b would be 6 - -6 so you switch the negative 6 to a positive 6

And have 6 + 6 equaling 12.

1 is c

2 is a

3 is a

step-by-step explanation:

4x and 6y

im not sure though