Question

Determine what number should be added to make it perfect quare trinomial
X² +2x+=______

Answer 1

A perfect square is a number that is resulted by the other number raised by 2.

For example: 36 is a perfect square, because 6² = 36.

A perfect square trinomial is a trinomial that is resulted by a squared-binomial.

(x² + 2x + 1) is a perfect square trinomial, because it can be expressed by the square- binomial form as (x+1)²

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