√a means the positive square root of a
√4 = 2, not ±2
Just because (-2)^2 = 4 does not make -2 equal to √4
So, as written, the equation has no solution, because √4 = 2, not -2
Solve the equation. Identify any extraneous solutions. √a=-2
A.4 is a solution of the original equation.
B.4 is a solution of the original equation. -4 is an extraneous solution*****
C.-4 is a solution of the original equation. -4 is an extraneous solution
D.No solution
I messed up on these before, can someone walk me through the steps?
2 answers
Ohhh... Now I see it.
Thanks! :)
Thanks! :)