When AB is what value, the polynomial a ^ 2 + 5B ^ 2-2ab-4b + 4 has the minimum value? And find out the minimum value

a^2+5b^2-2ab-4b+4
=（a-b)^2+4b^2-4b+4
=（a-b)^2+4(b-1/2)^2+3
When a = b = 1 / 2, remove the minimum value 3

RELATED INFORMATIONS

1. The latest development of 2 - | a |_ The value is_ When a=_ The minimum value of the algebraic formula (a + 2) * + 5 is
2. If | A-1 | + | B-2 | = 0, find the value of the algebraic formula 2A + B
3. The minimum value of the algebraic formula √ x + √ X-1 + √ X-2 is () a.0 B.1 + √ 2 C1 D does not exist
4. What is the minimum value of the algebraic formula 1 / - 2-A ^ 2-2ab-b ^ 2? When the algebraic formula takes the minimum value, what conditions should a and B satisfy?
5. If f (x) is an odd function on R, and if x > 0, f (x) = the third power of X + 1, then the expression of F (x) is
6. If f (x) is an odd function defined on R, then
7. Let f (x) be an odd function, and if x is greater than 0, f (x) = x-3-2x-1, then the expression of F (x) on X ∈ R is obtained
8. Let f (x) be an odd function defined on R. when x < 0, f (x) = x23, then f (8)=______ ．
9. Let f (x) be an odd function defined on R, f (x + 3) f (x) = - 1 Since a function is an odd function defined on R, why let x = 0. F (x) = 0 such that f (x + 3) f (x) = - 1 does not hold?
10. Let f (x) be an odd function defined on R, and if x > 0, f (x) = 3-2 ^ x, then f (- 2)=（ Let f (x) be an odd function defined on R, and if x > 0, f (x) = 3-2 ^ x, then f (- 2)=（
11. When a, B, why is the value, the polynomial a to the second power + B to the second power + 2a-4b + 16 has the minimum value?
12. Basic inequality: given a > 0, find the minimum value of A2 + 16 / A + A / A2 + 16 65 / 8 why do I calculate the minimum value of 2? And what's wrong with me?
13. Let a and B be r, A2 + 2B2 = 6, then the minimum value of a + B is - 3
14. If a = A2 + 5b2-4ab + 2B + 100, find the minimum value of A
15. If a = A2 + 5b2-4ab + 2B + 100, find the minimum value of A
16. If a = A2 + 5b2-4ab + 2B + 100, find the minimum value of A
17. If the square root of a + 1 and the square root of 2b-6 are opposite numbers, then the cube root of a + B is? It's very urgent, and it's analytical. Well intentioned, it's for you,
18. A = a ^ 2 + B ^ 2-C ^ 2, B = - 4A ^ 2 + 2B ^ 2 + 3C ^ 2, and a + B + C = 0 Find: 1, polynomial C 2, if a = 1, B = - 1, C = 3, find the value of a + B
19. 4A - (2b-3c) remove brackets
20. Simplify a - [4a-2 (a-2b)]