2) Given that a and B are rational numbers and satisfy 2A + 3 √ 3 · b-2-b + √ 3 · A-15 √ 3 = 0, try to find the value of a and B Give reasons

2) Given that a and B are rational numbers and satisfy 2A + 3 √ 3 · b-2-b + √ 3 · A-15 √ 3 = 0, try to find the value of a and B Give reasons


2a-b-2=√3(15-a-3b)
If the left is a rational number, then the right is a rational number
3 is irrational
Then only multiply by 0 is rational
So right = 0, left = 0
2a-b-2=0
15-a-3b=0
The solution is a = 3, B = 4