If a + B = 4 radical a + 2 radical B-5, then a + 2B= The faster the better, small points do not become respect!

If a + B = 4 radical a + 2 radical B-5, then a + 2B= The faster the better, small points do not become respect!

a+b=4√a+2√b-5
(a-4√a+4)+(b-2√b+1)=0
(√a-2)^2+(√b-1)^2=0
If the square is greater than or equal to 0, the sum is equal to 0. If one is greater than 0, then the other is less than 0
So both are equal to zero
So √ A-2 = 0, √ a = 2, a = 4
√b-1=0,√b=1,b=1
a+2b=4+2=6