4X & # 178; - 12xy + K & # 178; Y & # 178; is the value of K in the complete square formula

4X & # 178; - 12xy + K & # 178; Y & # 178; is the value of K in the complete square formula

4X & # 178; - 12xy + K & # 178; Y & # 178; is a complete square
=(2x-3y)^2
=4x^2-12xy+9y^2
So K ^ 2 = 9
K = soil 3

If the equation (2x + a) / 3 = (4x + B0 / 5) of X is not negative, then the relationship between a and B is positive
A.a

The difference between B and D is more than one equal sign, because the question is that the value of X is not negative, which means that the value of X is positive or 0. The original formula can be changed to 2x / 3 + A / 3 = 4x / 5 + B / 5 2x / 15 = B / 5-a / 3, so B / 5-a / 3 > = 0, so the result comes out

Then, if the solution of the equation is not a positive value of 0.6A + 5 / B, then it is not a positive value of 0.6A + 5 / b

Solve the equation about X
2X+0.6A/3=4X+B/5
2X-4X=B/5-0.6A/3
-2X=B/5-0.2A
X=-B/10+A/10
If the solution is not positive, then - B / 10 + A / 10 ≤ 0, A-B ≤ 0, a ≤ B
Then the relation between a and B is (a ≤ b)