Question

Find the solution of 3 square root of x+5=-9

Answer 1

\[3\sqrt{x+5}=-9\]\[3(x+5)^{1/2}=-9\]\[Expand brackets\]\[3x+15=(-9)^2\]\[3x+15=81\]\[3x=81-15\]\[x=66/3\]

Answer 2

these are the anser choices:

x = 4; not extraneous

x = 4; extraneous

x = 0; extraneous

x = 0; not extraneous