how to solve either by eliminating or including 7 and 56 ?

how to solve either by eliminating or including 7 and 56 ?

Tyler L.

Patient and Knowledgeable Math/Science Tutor

New York, NY

4.9
(35 ratings)

Eric F.

Experienced, patient and knowledgeable Ivy League Graduate Tutor

New York, NY

5.0
(62 ratings)

James M.

Inquisitive PhD student of Math and Music at CUNY Graduate Center

Middle Village, NY

4.8
(101 ratings)

## Comments

Did you mean 7 * sqrt(w+9) = 56?

If so, first divide both sides by 7:

sqrt(w+9) = 8

Now square both sides:

w+9 = 64

Subtract 9 from both sides:

w = 55

Check:

7 * sqrt(55+9) =? 56

7 * sqrt(64) =? 56

7 * 8 =? 56

56 = 56 √