Question

Which method would be the most efficient method to solve x^{2}-6=0.

A)Factoring
B)using the quadratic formula
C)all three methods would be efficient
D)isolating the  x^2 term and finding the square roots of both sides.

Answer 1

D. Isolation would produce
`x^2-6=0\\x^2=6\\√(x^2)=√(6)\\x=√(6)`, less steps than any other solution.