Question

sqrt{x+12}=x

Answer 1

\[x=-4,3\]

Answer 2

scratch that

Answer 3

sorry

Answer 4

x=4

Answer 5

square both sides:

(sqrt(x+12)) ^2 = x^2

x+12= x^2

x^2 -x -12 = 0

(x-4) (x+3)

x maybe equal to 4 or -3

Answer 6

if u check it 4 is correct thxs

Answer 7

double check to see if they both fit the bill:

sqrt(4+12) = 4
sqrt(16) = 4
4 = 4 ... 4 is good.

sqrt(-3+1) = -3
thats just silly, you can get a negative number when you square...unless......you have to use your imagination :)