OpenStudy (anonymous):

how do I slove this question?

5 years ago
OpenStudy (anonymous):

\[\sqrt{x+7}=x+5\]

5 years ago
OpenStudy (anonymous):

@satellite73

5 years ago
OpenStudy (anonymous):

Can you please help me

5 years ago
OpenStudy (amistre64):

do you know how to undo a sqrt?

5 years ago
OpenStudy (anonymous):

No

5 years ago
OpenStudy (amistre64):

what would you determine the value of:\[\sqrt3*\sqrt3\]

5 years ago
OpenStudy (anonymous):

3

5 years ago
OpenStudy (amistre64):

good, then lets see what we did:\[\sqrt3*\sqrt3=(\sqrt3)^2=3\]

5 years ago
OpenStudy (anonymous):

the qustion also said check for extraneous solution

5 years ago
OpenStudy (amistre64):

if you want to undo a sqrt, you have to square it; square both sides

5 years ago
OpenStudy (anonymous):

(s)

5 years ago
OpenStudy (anonymous):

|dw:1377637089946:dw|

5 years ago