12ab+2(-3+b)^2при a=√10,b√3

Question

12ab+2(-3+b)^2при a=√10,b√3

Answer 1

12ab+2(b^2-6b+9)=6ab+b^2-6b+9=6(30)^1/2  +3-6(3)^1/2  +9=(30)^1/2  +2- 3^1/2=5,75