Heres the pic i forgot to add. Again, pls help

2

Explanation:

1) what is the square root of 4? 2!

2x

2) = = 2

3) Apply the exponent rule : xx=x^1+1

= 2

4) Add the numbers: 1+1=2

= 2

substitute y = 2x - 4 to x + 2y = 12:

x + 2(2x - 4) = 12     use distributive property

x + (2)(2x) + () = 12

x + 4x - 8 = 12     add 8 to both sides

5x = 20     divide both sides by 5

x = 4

put the value of x to the first equation:

y = 2(4) - 4

y = 8 - 4

y = 4