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Listen "Factoring Ep.7: Factor Difference of Squares - 7:19"
Episode Synopsis
KEY CONCEPTS:Difference of squares are binomials with the function of subtraction separating the 2 terms. NEVER a positive value.When Factoring such special quadratics:i.) square root the first term and the second termii.) place the first value as the first term of 2 sets of binomials and the second value as the second termiii.) in one set of binomials write a negative, and the second set a positive.ie. x^2-81 = (x+9)(x-9)
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27/01/2009
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