Asked by Cassie

Which is the extraneous solution of -x=sq root of 2x+15?

A. -5
B. -3
C. 3
D. 5
I think it is D...?
Answered by Reiny
you are correct

if x = 5
LS = -5
RS = √(10+15) = √25 = 5 ≠ LS