I NEED HELP!!!!!!!!!
Justify if completing the square is a good method for solving when the Discriminant is negative. Use any of your three functions as an example and respond in complete sentences.
Satisfied with your answer, the wise old woman grants you the treasure of the Lost Island of Laplaya! The treasure is an awesome ability to complete the square! Way to go! Professor McMerlock is thankful he picked you and promises to call on you again for another adventure.
f(x)=x^2-4.
g(x)= x^2-2
h(x)=-3x^2+11i

Question

I NEED HELP!!!!!!!!!
Justify if completing the square is a good method for solving when the Discriminant is negative. Use any of your three functions as an example and respond in complete sentences.
Satisfied with your answer, the wise old woman grants you the treasure of the Lost Island of Laplaya! The treasure is an awesome ability to complete the square! Way to go! Professor McMerlock is thankful he picked you and promises to call on you again for another adventure.
f(x)=x^2-4. 
g(x)= x^2-2 
h(x)=-3x^2+11i

tyteen4a03 · Answer

Treasure... way to make math look interesting. :P

If the discriminant is negative, it means there is no real solution for f(x) = 0 - i.e it does not touch the x axis. Completing the square in this case would give you imaginary numbers, and most sensible textbooks would recommend running away from it until you're at college.