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Perfect square
If an equation starts and ends with a square, it may be a perfect square trinomial.
The first term starts with a square. So the square root of a^2 is a.
The third term ends with a square. So the square root of b^2 is b.
The middle term is 2 x a (the square root of a^2) x b (the square root of b^2). 2 x a x b
Example
2^2 (Starts with a square)
3^2 (Ends with a square)
This is a complex trinomial so you factor it just this:
They both are the same so it could be written as this
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