Question

How do you solve for a in `sqrt(a + 9)= b + 3`?

Answer 1

You must square both sides to move the 9 to the other side of the equation.

Explanation:

`sqrt(a + 9) = b + 3`

`(sqrt(a + 9))^2 = (b + 3)^2`

`a + 9 = b^2 + 6b + 9`

`a = b^2 + 6b or a = b(b + 6)`

Hopefully this helps!