Sqrt(x) - 5+7 =11
combine like terms
-5 +7 = 2
sqrt(x) + 2 = 11
subtract 2 from each side
sqrt(x) = 9
square both sides
x = 9^2
x = 81
an extraneous solution would be an invalid solution
in this case it is not an extraneous solution
Answer:
x=-1
Step-by-step explanation:
X+0.2=-0.8
x=-1
34.7 because 20.2 + 14.5 = 34.7
hope this helps :):)
Answer:
Step-by-step explanation:
the third one
