Then there is
3x-2=-5x-6
8x=-4
x=- 1/2
3x-2=-7/2
(-7/2)? =49/4
Or 3x-2=5x+6
x=-4
3x-2=- 14
- 14? = 196
This number is 196 or 49/4.
2. Solution: Because the square root of 2a- 1 is plus or minus 3, the square root of 3a+b- 1 is plus or minus 4.
So 2a- 1 = (3) 2 = 9.
3a+b- 1= 16
The solution is a=5 b=2.
2a+3b= 16
The square root of 2a+3b is 4.