Math Factoring - 1 Difference of two squares To identify a...

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1)Difference of two squaresTo identify a binomial as having a difference of squares, it must have two terms, the coefficient in front of each has to be a perfect square, there must be a minus sign between the two terms, andthe degree of each term must either be even or zero.(a2-b2) = (a + b) (a - b)Example:4x2-81(2x + 9) (2x – 9)2)Perfect square trinomialsTo check for a perfect square trinomial, the first and last terms should be perfect squares, the middle term should be the first term multiplied by the last term times two, and finally the second sign of the trinomial should be positive.

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