A mathematical expression is considered as a perfect square trinomial if it is a result of a squared binomial: (a + b)^2. If expanded, it can be formed as a^2 + 2ab + b^2.
Ex. (x + 1)^2 => x^2 + 2x + 1
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A mathematical expression is considered as a perfect square trinomial if it is a result of a squared binomial: (a + b)^2. If expanded, it can be formed as a^2 + 2ab + b^2.
Ex. (x + 1)^2 => x^2 + 2x + 1