Question

Solve the equation is the answer 9?
\[\sqrt{x-7}-2=0\]

Answer 1

should be 11

Answer 2

\[\sqrt{x-7}=2 \rightarrow x-7=4 \rightarrow \]

Answer 3

11

Answer 4

how are you getting the 4 part? i see 4+7 = 11

Answer 5

\[\sqrt{x-7}-2=0\]\[\sqrt{x-7}=2\]\[(\sqrt{x-7})^2=2^2\]\[x-7=4\]\[x=4+7\]\[x=11\]

Answer 6

ok i think i am following, i hope

Answer 7

You most likely forgot to square both side when getting rid of the sr root

Answer 8

i did forget, i think that is where i had it screwed up

Answer 9

yup