2x + 2y = -2
3x -2y =12

(2,-3)

Step-by-step explanation:

2x + 2y = -2

3x -2y =12

Add the two equations together to eliminate y

2x + 2y = -2

3x -2y =12

5x = 10

Divide each side by 5

5x/5 = 10/5

x =2

Now we need to find y

2x+2y=-2

2(2) +2y = -2

4+2y = -2

Subtract 4 from each side

4-4 +2y = -2-4

2y = -6

Divide each side by 2

2y/2 = -6/2

y =-3

step-by-step explanation:

20% of 120 is 24. if you subtract 24 from 120 you get 96

a4 - 3a2 - 1

step-by-step explanation:

step   1   :

equation at the end of step   1   :

  ((a4) -   3a2) -   1

step   2   :

trying to factor by splitting the middle term

2.1     factoring   a4-3a2-1  

the first term is,   a4   its coefficient is   1 .

the middle term is,   -3a2   its coefficient is   -3 .

the last term, "the constant", is   -1