Which statement best reflects the solution(s) of the equation? β3x+1 βx+3=0 (note it's the square root of 3x+1) a. There is only one solution: x = 8. The solution x = 1 is an extraneous solution. b. There is only one solution: x = 8. The solution x = 0 is an extraneous solution. c. There is only one solution: x = 1. The solution x = 8 is an extraneous solution. d. There are two solutions: x = 1 and x = 8.
Accepted Solution
A:
β3x+1 βx+3=0
(β3x+1)^2 =(x-3)^2
3x + 1 = x^2 - 6x + 9
0 = x^2 - 9x + 8
0= (x - 8) (x β 1)
Β X = 8 and x = 1
First letβs solve for x = 8
β3 (8) + 1 β (8) + 3 = 0
β24 + 1 β 5 =0
β25 β 5 =0
5-5=0
0=0
X=8 is a solution
For x=1
β3 (1) + 1 β (1) + 3 = 0
β4 β 4 =0
2 β 4 =0
-2=0
X=1 is not a solution
Therefore:
a. There is only one
solution: x = 8. The solution x = 1 is an extraneous solution.