# How do you solve #v^2 - 14v = -49#?

##### 1 Answer

Jun 27, 2015

First add

Now

So the solution is

#### Explanation:

Having added

Notice that

So this is zero when

Perfect square trinomials are of the form:

In our case

If you see a quadratic with first and last terms being square, check the middle term to see if it's a perfect square trinomial.