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Second grade math! ! (square root) important process! ! I will hand it in tomorrow! Dear big brothers and sisters, help me, and the little ones will kneel down for you ~ ~
The square roots of 1. positive numbers are 3x-2 and 5x+6.

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.

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