Question

How do you solve `4x^2-49=0` by taking square roots?

Answer 1

`x= +-7/2`

Explanation:

`4x^2-49=0`

1. Add `49` to both sides
   `4x^2=49`

2. Divide both sides by `4`
   `x^2= 49/4`

3. Square root both sides
   `x= +-sqrt(49/4)`
   `x= +-7/2`